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Finding the Fourth Proportional to 285,980.40, 429,045.12 and 108,491.04

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Solution

The fourth proportional to 285,980.40, 429,045.12 and 108,491.04 is: 162,764.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,980.40 : 429,045.12 = 108,491.04 : x
  2. Step 2: Convert to fraction form
    285,980.40/429,045.12 = 108,491.04/x
  3. Step 3: Cross multiply
    285,980.40x = 429,045.12 × 108,491.04
  4. Step 4: Simplify right side
    285,980.40x = 46,547,551,275.72
  5. Step 5: Solve for x
    x = 46,547,551,275.72/285,980.40
  6. Step 6: Final answer
    x = 162,764.83

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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.