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Finding the Fourth Proportional to 278,564.47, 417,689.87 and 88,980.29

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Solution

The fourth proportional to 278,564.47, 417,689.87 and 88,980.29 is: 133,420.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,564.47 : 417,689.87 = 88,980.29 : x
  2. Step 2: Convert to fraction form
    278,564.47/417,689.87 = 88,980.29/x
  3. Step 3: Cross multiply
    278,564.47x = 417,689.87 × 88,980.29
  4. Step 4: Simplify right side
    278,564.47x = 37,166,164,795.65
  5. Step 5: Solve for x
    x = 37,166,164,795.65/278,564.47
  6. Step 6: Final answer
    x = 133,420.34

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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.