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Finding the Fourth Proportional to 448,276.90, 672,415.35 and 163,966.90

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Solution

The fourth proportional to 448,276.90, 672,415.35 and 163,966.90 is: 245,950.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,276.90 : 672,415.35 = 163,966.90 : x
  2. Step 2: Convert to fraction form
    448,276.90/672,415.35 = 163,966.90/x
  3. Step 3: Cross multiply
    448,276.90x = 672,415.35 × 163,966.90
  4. Step 4: Simplify right side
    448,276.90x = 110,253,860,451.92
  5. Step 5: Solve for x
    x = 110,253,860,451.92/448,276.90
  6. Step 6: Final answer
    x = 245,950.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.