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Finding the Fourth Proportional to 402,287.88, 555,078.72 and 230,258.46

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Solution

The fourth proportional to 402,287.88, 555,078.72 and 230,258.46 is: 317,711.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,287.88 : 555,078.72 = 230,258.46 : x
  2. Step 2: Convert to fraction form
    402,287.88/555,078.72 = 230,258.46/x
  3. Step 3: Cross multiply
    402,287.88x = 555,078.72 × 230,258.46
  4. Step 4: Simplify right side
    402,287.88x = 127,811,571,245.97
  5. Step 5: Solve for x
    x = 127,811,571,245.97/402,287.88
  6. Step 6: Final answer
    x = 317,711.71

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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.