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Finding the Fourth Proportional to 587,731.20, 881,726.40 and 188,390.40

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Solution

The fourth proportional to 587,731.20, 881,726.40 and 188,390.40 is: 282,627.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,731.20 : 881,726.40 = 188,390.40 : x
  2. Step 2: Convert to fraction form
    587,731.20/881,726.40 = 188,390.40/x
  3. Step 3: Cross multiply
    587,731.20x = 881,726.40 × 188,390.40
  4. Step 4: Simplify right side
    587,731.20x = 166,108,789,186.56
  5. Step 5: Solve for x
    x = 166,108,789,186.56/587,731.20
  6. Step 6: Final answer
    x = 282,627.14

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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.