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Finding the Fourth Proportional to 310,685.04, 428,760.96 and 174,761.76

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Solution

The fourth proportional to 310,685.04, 428,760.96 and 174,761.76 is: 241,180.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,685.04 : 428,760.96 = 174,761.76 : x
  2. Step 2: Convert to fraction form
    310,685.04/428,760.96 = 174,761.76/x
  3. Step 3: Cross multiply
    310,685.04x = 428,760.96 × 174,761.76
  4. Step 4: Simplify right side
    310,685.04x = 74,931,019,988.89
  5. Step 5: Solve for x
    x = 74,931,019,988.89/310,685.04
  6. Step 6: Final answer
    x = 241,180.01

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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.