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Finding the Fourth Proportional to 496,869.60, 745,246.80 and 141,938.40

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Solution

The fourth proportional to 496,869.60, 745,246.80 and 141,938.40 is: 212,891.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,869.60 : 745,246.80 = 141,938.40 : x
  2. Step 2: Convert to fraction form
    496,869.60/745,246.80 = 141,938.40/x
  3. Step 3: Cross multiply
    496,869.60x = 745,246.80 × 141,938.40
  4. Step 4: Simplify right side
    496,869.60x = 105,779,138,397.12
  5. Step 5: Solve for x
    x = 105,779,138,397.12/496,869.60
  6. Step 6: Final answer
    x = 212,891.15

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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.