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Finding the Fourth Proportional to 191,010.70, 285,932.85 and 149,020.30

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Solution

The fourth proportional to 191,010.70, 285,932.85 and 149,020.30 is: 223,075.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,010.70 : 285,932.85 = 149,020.30 : x
  2. Step 2: Convert to fraction form
    191,010.70/285,932.85 = 149,020.30/x
  3. Step 3: Cross multiply
    191,010.70x = 285,932.85 × 149,020.30
  4. Step 4: Simplify right side
    191,010.70x = 42,609,799,086.86
  5. Step 5: Solve for x
    x = 42,609,799,086.86/191,010.70
  6. Step 6: Final answer
    x = 223,075.46

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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.