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Finding the Fourth Proportional to 437,603.85, 656,455.01 and 137,995.79

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Solution

The fourth proportional to 437,603.85, 656,455.01 and 137,995.79 is: 207,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,603.85 : 656,455.01 = 137,995.79 : x
  2. Step 2: Convert to fraction form
    437,603.85/656,455.01 = 137,995.79/x
  3. Step 3: Cross multiply
    437,603.85x = 656,455.01 × 137,995.79
  4. Step 4: Simplify right side
    437,603.85x = 90,588,023,732.15
  5. Step 5: Solve for x
    x = 90,588,023,732.15/437,603.85
  6. Step 6: Final answer
    x = 207,009.20

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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.