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Finding the Fourth Proportional to 253,118.40, 379,489.68 and 153,254.85

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Solution

The fourth proportional to 253,118.40, 379,489.68 and 153,254.85 is: 229,768.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,118.40 : 379,489.68 = 153,254.85 : x
  2. Step 2: Convert to fraction form
    253,118.40/379,489.68 = 153,254.85/x
  3. Step 3: Cross multiply
    253,118.40x = 379,489.68 × 153,254.85
  4. Step 4: Simplify right side
    253,118.40x = 58,158,633,984.95
  5. Step 5: Solve for x
    x = 58,158,633,984.95/253,118.40
  6. Step 6: Final answer
    x = 229,768.50

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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.