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Finding the Fourth Proportional to 487,489.40, 731,303.40 and 150,557.48

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Solution

The fourth proportional to 487,489.40, 731,303.40 and 150,557.48 is: 225,857.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,489.40 : 731,303.40 = 150,557.48 : x
  2. Step 2: Convert to fraction form
    487,489.40/731,303.40 = 150,557.48/x
  3. Step 3: Cross multiply
    487,489.40x = 731,303.40 × 150,557.48
  4. Step 4: Simplify right side
    487,489.40x = 110,103,197,019.43
  5. Step 5: Solve for x
    x = 110,103,197,019.43/487,489.40
  6. Step 6: Final answer
    x = 225,857.62

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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.