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Finding the Fourth Proportional to 295,312.80, 442,969.20 and 215,997.60

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Solution

The fourth proportional to 295,312.80, 442,969.20 and 215,997.60 is: 323,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,312.80 : 442,969.20 = 215,997.60 : x
  2. Step 2: Convert to fraction form
    295,312.80/442,969.20 = 215,997.60/x
  3. Step 3: Cross multiply
    295,312.80x = 442,969.20 × 215,997.60
  4. Step 4: Simplify right side
    295,312.80x = 95,680,284,073.92
  5. Step 5: Solve for x
    x = 95,680,284,073.92/295,312.80
  6. Step 6: Final answer
    x = 323,996.40

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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.