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Finding the Fourth Proportional to 498,415.70, 747,550.65 and 143,392.70

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Solution

The fourth proportional to 498,415.70, 747,550.65 and 143,392.70 is: 215,068.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,415.70 : 747,550.65 = 143,392.70 : x
  2. Step 2: Convert to fraction form
    498,415.70/747,550.65 = 143,392.70/x
  3. Step 3: Cross multiply
    498,415.70x = 747,550.65 × 143,392.70
  4. Step 4: Simplify right side
    498,415.70x = 107,193,306,090.26
  5. Step 5: Solve for x
    x = 107,193,306,090.26/498,415.70
  6. Step 6: Final answer
    x = 215,068.08

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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.