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Finding the Fourth Proportional to 253,691.06, 380,675.90 and 147,205.22

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Solution

The fourth proportional to 253,691.06, 380,675.90 and 147,205.22 is: 220,888.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,691.06 : 380,675.90 = 147,205.22 : x
  2. Step 2: Convert to fraction form
    253,691.06/380,675.90 = 147,205.22/x
  3. Step 3: Cross multiply
    253,691.06x = 380,675.90 × 147,205.22
  4. Step 4: Simplify right side
    253,691.06x = 56,037,478,072.83
  5. Step 5: Solve for x
    x = 56,037,478,072.83/253,691.06
  6. Step 6: Final answer
    x = 220,888.66

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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.