Home / 437,923.65-656,828.88-138,434.45

Finding the Fourth Proportional to 437,923.65, 656,828.88 and 138,434.45

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Solution

The fourth proportional to 437,923.65, 656,828.88 and 138,434.45 is: 207,633.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,923.65 : 656,828.88 = 138,434.45 : x
  2. Step 2: Convert to fraction form
    437,923.65/656,828.88 = 138,434.45/x
  3. Step 3: Cross multiply
    437,923.65x = 656,828.88 × 138,434.45
  4. Step 4: Simplify right side
    437,923.65x = 90,927,741,462.77
  5. Step 5: Solve for x
    x = 90,927,741,462.77/437,923.65
  6. Step 6: Final answer
    x = 207,633.78

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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.