Home / 387,040.39-534,116.28-217,275.73

Finding the Fourth Proportional to 387,040.39, 534,116.28 and 217,275.73

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Solution

The fourth proportional to 387,040.39, 534,116.28 and 217,275.73 is: 299,840.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,040.39 : 534,116.28 = 217,275.73 : x
  2. Step 2: Convert to fraction form
    387,040.39/534,116.28 = 217,275.73/x
  3. Step 3: Cross multiply
    387,040.39x = 534,116.28 × 217,275.73
  4. Step 4: Simplify right side
    387,040.39x = 116,050,504,641.88
  5. Step 5: Solve for x
    x = 116,050,504,641.88/387,040.39
  6. Step 6: Final answer
    x = 299,840.81

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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.