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Finding the Fourth Proportional to 371,088, 556,891.20 and 149,472

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Solution

The fourth proportional to 371,088, 556,891.20 and 149,472 is: 224,312.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,088 : 556,891.20 = 149,472 : x
  2. Step 2: Convert to fraction form
    371,088/556,891.20 = 149,472/x
  3. Step 3: Cross multiply
    371,088x = 556,891.20 × 149,472
  4. Step 4: Simplify right side
    371,088x = 83,239,641,446.40
  5. Step 5: Solve for x
    x = 83,239,641,446.40/371,088
  6. Step 6: Final answer
    x = 224,312.40

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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.