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Finding the Fourth Proportional to 499,142.52, 749,063.70 and 288,490.68

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Solution

The fourth proportional to 499,142.52, 749,063.70 and 288,490.68 is: 432,938.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,142.52 : 749,063.70 = 288,490.68 : x
  2. Step 2: Convert to fraction form
    499,142.52/749,063.70 = 288,490.68/x
  3. Step 3: Cross multiply
    499,142.52x = 749,063.70 × 288,490.68
  4. Step 4: Simplify right side
    499,142.52x = 216,097,896,176.32
  5. Step 5: Solve for x
    x = 216,097,896,176.32/499,142.52
  6. Step 6: Final answer
    x = 432,938.26

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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.