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Finding the Fourth Proportional to 453,381.40, 681,299.70 and 243,170.20

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Solution

The fourth proportional to 453,381.40, 681,299.70 and 243,170.20 is: 365,413.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,381.40 : 681,299.70 = 243,170.20 : x
  2. Step 2: Convert to fraction form
    453,381.40/681,299.70 = 243,170.20/x
  3. Step 3: Cross multiply
    453,381.40x = 681,299.70 × 243,170.20
  4. Step 4: Simplify right side
    453,381.40x = 165,671,784,308.94
  5. Step 5: Solve for x
    x = 165,671,784,308.94/453,381.40
  6. Step 6: Final answer
    x = 365,413.72

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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.