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Finding the Fourth Proportional to 386,493.40, 579,740.10 and 246,525.40

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Solution

The fourth proportional to 386,493.40, 579,740.10 and 246,525.40 is: 369,788.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,493.40 : 579,740.10 = 246,525.40 : x
  2. Step 2: Convert to fraction form
    386,493.40/579,740.10 = 246,525.40/x
  3. Step 3: Cross multiply
    386,493.40x = 579,740.10 × 246,525.40
  4. Step 4: Simplify right side
    386,493.40x = 142,920,660,048.54
  5. Step 5: Solve for x
    x = 142,920,660,048.54/386,493.40
  6. Step 6: Final answer
    x = 369,788.10

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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.