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Finding the Fourth Proportional to 295,531.20, 442,640.70 and 243,043.20

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Solution

The fourth proportional to 295,531.20, 442,640.70 and 243,043.20 is: 364,025.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,531.20 : 442,640.70 = 243,043.20 : x
  2. Step 2: Convert to fraction form
    295,531.20/442,640.70 = 243,043.20/x
  3. Step 3: Cross multiply
    295,531.20x = 442,640.70 × 243,043.20
  4. Step 4: Simplify right side
    295,531.20x = 107,580,812,178.24
  5. Step 5: Solve for x
    x = 107,580,812,178.24/295,531.20
  6. Step 6: Final answer
    x = 364,025.23

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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.