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Finding the Fourth Proportional to 515,346.84, 773,073.18 and 178,386.96

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Solution

The fourth proportional to 515,346.84, 773,073.18 and 178,386.96 is: 267,598.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,346.84 : 773,073.18 = 178,386.96 : x
  2. Step 2: Convert to fraction form
    515,346.84/773,073.18 = 178,386.96/x
  3. Step 3: Cross multiply
    515,346.84x = 773,073.18 × 178,386.96
  4. Step 4: Simplify right side
    515,346.84x = 137,906,174,437.73
  5. Step 5: Solve for x
    x = 137,906,174,437.73/515,346.84
  6. Step 6: Final answer
    x = 267,598.76

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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.