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Finding the Fourth Proportional to 310,866.34, 428,995.57 and 176,730.34

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Solution

The fourth proportional to 310,866.34, 428,995.57 and 176,730.34 is: 243,887.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,866.34 : 428,995.57 = 176,730.34 : x
  2. Step 2: Convert to fraction form
    310,866.34/428,995.57 = 176,730.34/x
  3. Step 3: Cross multiply
    310,866.34x = 428,995.57 × 176,730.34
  4. Step 4: Simplify right side
    310,866.34x = 75,816,532,944.59
  5. Step 5: Solve for x
    x = 75,816,532,944.59/310,866.34
  6. Step 6: Final answer
    x = 243,887.88

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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.