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Finding the Fourth Proportional to 290,095.80, 435,143.70 and 79,733.40

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Solution

The fourth proportional to 290,095.80, 435,143.70 and 79,733.40 is: 119,600.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,095.80 : 435,143.70 = 79,733.40 : x
  2. Step 2: Convert to fraction form
    290,095.80/435,143.70 = 79,733.40/x
  3. Step 3: Cross multiply
    290,095.80x = 435,143.70 × 79,733.40
  4. Step 4: Simplify right side
    290,095.80x = 34,695,486,689.58
  5. Step 5: Solve for x
    x = 34,695,486,689.58/290,095.80
  6. Step 6: Final answer
    x = 119,600.10

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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.