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Finding the Fourth Proportional to 310,264.27, 428,164.45 and 176,128.27

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Solution

The fourth proportional to 310,264.27, 428,164.45 and 176,128.27 is: 243,056.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,264.27 : 428,164.45 = 176,128.27 : x
  2. Step 2: Convert to fraction form
    310,264.27/428,164.45 = 176,128.27/x
  3. Step 3: Cross multiply
    310,264.27x = 428,164.45 × 176,128.27
  4. Step 4: Simplify right side
    310,264.27x = 75,411,863,854.00
  5. Step 5: Solve for x
    x = 75,411,863,854.00/310,264.27
  6. Step 6: Final answer
    x = 243,056.87

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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.