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Finding the Fourth Proportional to 243,340.70, 365,011.03 and 77,128.70

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Solution

The fourth proportional to 243,340.70, 365,011.03 and 77,128.70 is: 115,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,340.70 : 365,011.03 = 77,128.70 : x
  2. Step 2: Convert to fraction form
    243,340.70/365,011.03 = 77,128.70/x
  3. Step 3: Cross multiply
    243,340.70x = 365,011.03 × 77,128.70
  4. Step 4: Simplify right side
    243,340.70x = 28,152,826,229.56
  5. Step 5: Solve for x
    x = 28,152,826,229.56/243,340.70
  6. Step 6: Final answer
    x = 115,693.04

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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.