Home / 438,021.06-656,931.15-122,500.26

Finding the Fourth Proportional to 438,021.06, 656,931.15 and 122,500.26

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Solution

The fourth proportional to 438,021.06, 656,931.15 and 122,500.26 is: 183,722.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,021.06 : 656,931.15 = 122,500.26 : x
  2. Step 2: Convert to fraction form
    438,021.06/656,931.15 = 122,500.26/x
  3. Step 3: Cross multiply
    438,021.06x = 656,931.15 × 122,500.26
  4. Step 4: Simplify right side
    438,021.06x = 80,474,236,677.10
  5. Step 5: Solve for x
    x = 80,474,236,677.10/438,021.06
  6. Step 6: Final answer
    x = 183,722.30

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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.