Home / 415,947.20-623,920.80-149,716.40

Finding the Fourth Proportional to 415,947.20, 623,920.80 and 149,716.40

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Solution

The fourth proportional to 415,947.20, 623,920.80 and 149,716.40 is: 224,574.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,947.20 : 623,920.80 = 149,716.40 : x
  2. Step 2: Convert to fraction form
    415,947.20/623,920.80 = 149,716.40/x
  3. Step 3: Cross multiply
    415,947.20x = 623,920.80 × 149,716.40
  4. Step 4: Simplify right side
    415,947.20x = 93,411,176,061.12
  5. Step 5: Solve for x
    x = 93,411,176,061.12/415,947.20
  6. Step 6: Final answer
    x = 224,574.60

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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.