Home / 353,145.15-529,781.18-128,820.29

Finding the Fourth Proportional to 353,145.15, 529,781.18 and 128,820.29

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Solution

The fourth proportional to 353,145.15, 529,781.18 and 128,820.29 is: 193,253.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,145.15 : 529,781.18 = 128,820.29 : x
  2. Step 2: Convert to fraction form
    353,145.15/529,781.18 = 128,820.29/x
  3. Step 3: Cross multiply
    353,145.15x = 529,781.18 × 128,820.29
  4. Step 4: Simplify right side
    353,145.15x = 68,246,561,951.13
  5. Step 5: Solve for x
    x = 68,246,561,951.13/353,145.15
  6. Step 6: Final answer
    x = 193,253.57

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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.