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Finding the Fourth Proportional to 453,256, 679,898.40 and 137,715.68

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Solution

The fourth proportional to 453,256, 679,898.40 and 137,715.68 is: 206,577.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,256 : 679,898.40 = 137,715.68 : x
  2. Step 2: Convert to fraction form
    453,256/679,898.40 = 137,715.68/x
  3. Step 3: Cross multiply
    453,256x = 679,898.40 × 137,715.68
  4. Step 4: Simplify right side
    453,256x = 93,632,670,486.91
  5. Step 5: Solve for x
    x = 93,632,670,486.91/453,256
  6. Step 6: Final answer
    x = 206,577.90

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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.