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Finding the Fourth Proportional to 315,134.76, 435,046.56 and 243,353.64

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Solution

The fourth proportional to 315,134.76, 435,046.56 and 243,353.64 is: 335,952.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,134.76 : 435,046.56 = 243,353.64 : x
  2. Step 2: Convert to fraction form
    315,134.76/435,046.56 = 243,353.64/x
  3. Step 3: Cross multiply
    315,134.76x = 435,046.56 × 243,353.64
  4. Step 4: Simplify right side
    315,134.76x = 105,870,163,945.48
  5. Step 5: Solve for x
    x = 105,870,163,945.48/315,134.76
  6. Step 6: Final answer
    x = 335,952.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.