Home / 368,910.30-553,423.62-129,091.16

Finding the Fourth Proportional to 368,910.30, 553,423.62 and 129,091.16

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Solution

The fourth proportional to 368,910.30, 553,423.62 and 129,091.16 is: 193,657.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,910.30 : 553,423.62 = 129,091.16 : x
  2. Step 2: Convert to fraction form
    368,910.30/553,423.62 = 129,091.16/x
  3. Step 3: Cross multiply
    368,910.30x = 553,423.62 × 129,091.16
  4. Step 4: Simplify right side
    368,910.30x = 71,442,097,077.20
  5. Step 5: Solve for x
    x = 71,442,097,077.20/368,910.30
  6. Step 6: Final answer
    x = 193,657.10

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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.