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Finding the Fourth Proportional to 453,385.40, 681,305.70 and 243,174.20

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Solution

The fourth proportional to 453,385.40, 681,305.70 and 243,174.20 is: 365,419.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,385.40 : 681,305.70 = 243,174.20 : x
  2. Step 2: Convert to fraction form
    453,385.40/681,305.70 = 243,174.20/x
  3. Step 3: Cross multiply
    453,385.40x = 681,305.70 × 243,174.20
  4. Step 4: Simplify right side
    453,385.40x = 165,675,968,552.94
  5. Step 5: Solve for x
    x = 165,675,968,552.94/453,385.40
  6. Step 6: Final answer
    x = 365,419.73

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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.