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Finding the Fourth Proportional to 361,499.10, 542,151.45 and 108,779.10

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Solution

The fourth proportional to 361,499.10, 542,151.45 and 108,779.10 is: 163,139.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,499.10 : 542,151.45 = 108,779.10 : x
  2. Step 2: Convert to fraction form
    361,499.10/542,151.45 = 108,779.10/x
  3. Step 3: Cross multiply
    361,499.10x = 542,151.45 × 108,779.10
  4. Step 4: Simplify right side
    361,499.10x = 58,974,746,794.70
  5. Step 5: Solve for x
    x = 58,974,746,794.70/361,499.10
  6. Step 6: Final answer
    x = 163,139.40

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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.