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Finding the Fourth Proportional to 310,956.75, 466,437.75 and 86,334.72

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Solution

The fourth proportional to 310,956.75, 466,437.75 and 86,334.72 is: 129,502.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,956.75 : 466,437.75 = 86,334.72 : x
  2. Step 2: Convert to fraction form
    310,956.75/466,437.75 = 86,334.72/x
  3. Step 3: Cross multiply
    310,956.75x = 466,437.75 × 86,334.72
  4. Step 4: Simplify right side
    310,956.75x = 40,269,772,543.68
  5. Step 5: Solve for x
    x = 40,269,772,543.68/310,956.75
  6. Step 6: Final answer
    x = 129,502.81

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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.