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Finding the Fourth Proportional to 342,079.26, 513,148.95 and 89,357.74

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Solution

The fourth proportional to 342,079.26, 513,148.95 and 89,357.74 is: 134,044.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,079.26 : 513,148.95 = 89,357.74 : x
  2. Step 2: Convert to fraction form
    342,079.26/513,148.95 = 89,357.74/x
  3. Step 3: Cross multiply
    342,079.26x = 513,148.95 × 89,357.74
  4. Step 4: Simplify right side
    342,079.26x = 45,853,830,455.37
  5. Step 5: Solve for x
    x = 45,853,830,455.37/342,079.26
  6. Step 6: Final answer
    x = 134,044.46

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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.