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Finding the Fourth Proportional to 345,393.48, 518,044.86 and 108,737.40

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Solution

The fourth proportional to 345,393.48, 518,044.86 and 108,737.40 is: 163,091.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,393.48 : 518,044.86 = 108,737.40 : x
  2. Step 2: Convert to fraction form
    345,393.48/518,044.86 = 108,737.40/x
  3. Step 3: Cross multiply
    345,393.48x = 518,044.86 × 108,737.40
  4. Step 4: Simplify right side
    345,393.48x = 56,330,851,159.76
  5. Step 5: Solve for x
    x = 56,330,851,159.76/345,393.48
  6. Step 6: Final answer
    x = 163,091.82

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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.