Home / 428,432.08-591,101.16-247,119.70

Finding the Fourth Proportional to 428,432.08, 591,101.16 and 247,119.70

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Solution

The fourth proportional to 428,432.08, 591,101.16 and 247,119.70 is: 340,947.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,432.08 : 591,101.16 = 247,119.70 : x
  2. Step 2: Convert to fraction form
    428,432.08/591,101.16 = 247,119.70/x
  3. Step 3: Cross multiply
    428,432.08x = 591,101.16 × 247,119.70
  4. Step 4: Simplify right side
    428,432.08x = 146,072,741,328.85
  5. Step 5: Solve for x
    x = 146,072,741,328.85/428,432.08
  6. Step 6: Final answer
    x = 340,947.25

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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.