Home / 415,531.28-623,849.88-218,677.52

Finding the Fourth Proportional to 415,531.28, 623,849.88 and 218,677.52

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Solution

The fourth proportional to 415,531.28, 623,849.88 and 218,677.52 is: 328,307.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,531.28 : 623,849.88 = 218,677.52 : x
  2. Step 2: Convert to fraction form
    415,531.28/623,849.88 = 218,677.52/x
  3. Step 3: Cross multiply
    415,531.28x = 623,849.88 × 218,677.52
  4. Step 4: Simplify right side
    415,531.28x = 136,421,944,610.70
  5. Step 5: Solve for x
    x = 136,421,944,610.70/415,531.28
  6. Step 6: Final answer
    x = 328,307.28

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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.