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Finding the Fourth Proportional to 475,321.42, 713,140.98 and 155,487.88

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Solution

The fourth proportional to 475,321.42, 713,140.98 and 155,487.88 is: 233,283.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,321.42 : 713,140.98 = 155,487.88 : x
  2. Step 2: Convert to fraction form
    475,321.42/713,140.98 = 155,487.88/x
  3. Step 3: Cross multiply
    475,321.42x = 713,140.98 × 155,487.88
  4. Step 4: Simplify right side
    475,321.42x = 110,884,779,121.32
  5. Step 5: Solve for x
    x = 110,884,779,121.32/475,321.42
  6. Step 6: Final answer
    x = 233,283.78

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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.