Home / 428,422.58-591,088.06-247,110.20

Finding the Fourth Proportional to 428,422.58, 591,088.06 and 247,110.20

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Solution

The fourth proportional to 428,422.58, 591,088.06 and 247,110.20 is: 340,934.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,422.58 : 591,088.06 = 247,110.20 : x
  2. Step 2: Convert to fraction form
    428,422.58/591,088.06 = 247,110.20/x
  3. Step 3: Cross multiply
    428,422.58x = 591,088.06 × 247,110.20
  4. Step 4: Simplify right side
    428,422.58x = 146,063,888,724.21
  5. Step 5: Solve for x
    x = 146,063,888,724.21/428,422.58
  6. Step 6: Final answer
    x = 340,934.15

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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.