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Finding the Fourth Proportional to 438,115.80, 657,465.30 and 248,575.80

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Solution

The fourth proportional to 438,115.80, 657,465.30 and 248,575.80 is: 373,029.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,115.80 : 657,465.30 = 248,575.80 : x
  2. Step 2: Convert to fraction form
    438,115.80/657,465.30 = 248,575.80/x
  3. Step 3: Cross multiply
    438,115.80x = 657,465.30 × 248,575.80
  4. Step 4: Simplify right side
    438,115.80x = 163,429,962,919.74
  5. Step 5: Solve for x
    x = 163,429,962,919.74/438,115.80
  6. Step 6: Final answer
    x = 373,029.15

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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.