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Finding the Fourth Proportional to 498,428.95, 747,570.53 and 143,405.95

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Solution

The fourth proportional to 498,428.95, 747,570.53 and 143,405.95 is: 215,087.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,428.95 : 747,570.53 = 143,405.95 : x
  2. Step 2: Convert to fraction form
    498,428.95/747,570.53 = 143,405.95/x
  3. Step 3: Cross multiply
    498,428.95x = 747,570.53 × 143,405.95
  4. Step 4: Simplify right side
    498,428.95x = 107,206,061,329.62
  5. Step 5: Solve for x
    x = 107,206,061,329.62/498,428.95
  6. Step 6: Final answer
    x = 215,087.95

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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.