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Finding the Fourth Proportional to 342,802.60, 513,329.10 and 272,818.60

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Solution

The fourth proportional to 342,802.60, 513,329.10 and 272,818.60 is: 408,531.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,802.60 : 513,329.10 = 272,818.60 : x
  2. Step 2: Convert to fraction form
    342,802.60/513,329.10 = 272,818.60/x
  3. Step 3: Cross multiply
    342,802.60x = 513,329.10 × 272,818.60
  4. Step 4: Simplify right side
    342,802.60x = 140,045,726,401.26
  5. Step 5: Solve for x
    x = 140,045,726,401.26/342,802.60
  6. Step 6: Final answer
    x = 408,531.69

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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.