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Finding the Fourth Proportional to 498,385.93, 747,693.37 and 143,402.89

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Solution

The fourth proportional to 498,385.93, 747,693.37 and 143,402.89 is: 215,137.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,385.93 : 747,693.37 = 143,402.89 : x
  2. Step 2: Convert to fraction form
    498,385.93/747,693.37 = 143,402.89/x
  3. Step 3: Cross multiply
    498,385.93x = 747,693.37 × 143,402.89
  4. Step 4: Simplify right side
    498,385.93x = 107,221,385,994.87
  5. Step 5: Solve for x
    x = 107,221,385,994.87/498,385.93
  6. Step 6: Final answer
    x = 215,137.27

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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.