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Finding the Fourth Proportional to 424,384.32, 636,409.80 and 157,999.20

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Solution

The fourth proportional to 424,384.32, 636,409.80 and 157,999.20 is: 236,936.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,384.32 : 636,409.80 = 157,999.20 : x
  2. Step 2: Convert to fraction form
    424,384.32/636,409.80 = 157,999.20/x
  3. Step 3: Cross multiply
    424,384.32x = 636,409.80 × 157,999.20
  4. Step 4: Simplify right side
    424,384.32x = 100,552,239,272.16
  5. Step 5: Solve for x
    x = 100,552,239,272.16/424,384.32
  6. Step 6: Final answer
    x = 236,936.74

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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.