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Finding the Fourth Proportional to 253,031.06, 379,417.59 and 84,490.85

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Solution

The fourth proportional to 253,031.06, 379,417.59 and 84,490.85 is: 126,693.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,031.06 : 379,417.59 = 84,490.85 : x
  2. Step 2: Convert to fraction form
    253,031.06/379,417.59 = 84,490.85/x
  3. Step 3: Cross multiply
    253,031.06x = 379,417.59 × 84,490.85
  4. Step 4: Simplify right side
    253,031.06x = 32,057,312,786.96
  5. Step 5: Solve for x
    x = 32,057,312,786.96/253,031.06
  6. Step 6: Final answer
    x = 126,693.19

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1.5x scale

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.