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Finding the Fourth Proportional to 656,687.78, 985,031.86 and 158,051.78

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Solution

The fourth proportional to 656,687.78, 985,031.86 and 158,051.78 is: 237,077.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,687.78 : 985,031.86 = 158,051.78 : x
  2. Step 2: Convert to fraction form
    656,687.78/985,031.86 = 158,051.78/x
  3. Step 3: Cross multiply
    656,687.78x = 985,031.86 × 158,051.78
  4. Step 4: Simplify right side
    656,687.78x = 155,686,038,829.71
  5. Step 5: Solve for x
    x = 155,686,038,829.71/656,687.78
  6. Step 6: Final answer
    x = 237,077.72

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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.