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Finding the Fourth Proportional to 287,663.80, 431,333.70 and 110,176.60

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Solution

The fourth proportional to 287,663.80, 431,333.70 and 110,176.60 is: 165,202.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,663.80 : 431,333.70 = 110,176.60 : x
  2. Step 2: Convert to fraction form
    287,663.80/431,333.70 = 110,176.60/x
  3. Step 3: Cross multiply
    287,663.80x = 431,333.70 × 110,176.60
  4. Step 4: Simplify right side
    287,663.80x = 47,522,880,531.42
  5. Step 5: Solve for x
    x = 47,522,880,531.42/287,663.80
  6. Step 6: Final answer
    x = 165,202.85

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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.