Home / 215,670.46-297,647.38-129,657.28

Finding the Fourth Proportional to 215,670.46, 297,647.38 and 129,657.28

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Solution

The fourth proportional to 215,670.46, 297,647.38 and 129,657.28 is: 178,940.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,670.46 : 297,647.38 = 129,657.28 : x
  2. Step 2: Convert to fraction form
    215,670.46/297,647.38 = 129,657.28/x
  3. Step 3: Cross multiply
    215,670.46x = 297,647.38 × 129,657.28
  4. Step 4: Simplify right side
    215,670.46x = 38,592,149,689.93
  5. Step 5: Solve for x
    x = 38,592,149,689.93/215,670.46
  6. Step 6: Final answer
    x = 178,940.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.