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Finding the Fourth Proportional to 343,445.60, 515,277.05 and 154,068.41

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Solution

The fourth proportional to 343,445.60, 515,277.05 and 154,068.41 is: 231,151.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,445.60 : 515,277.05 = 154,068.41 : x
  2. Step 2: Convert to fraction form
    343,445.60/515,277.05 = 154,068.41/x
  3. Step 3: Cross multiply
    343,445.60x = 515,277.05 × 154,068.41
  4. Step 4: Simplify right side
    343,445.60x = 79,387,916,320.84
  5. Step 5: Solve for x
    x = 79,387,916,320.84/343,445.60
  6. Step 6: Final answer
    x = 231,151.35

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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.