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Finding the Fourth Proportional to 428,690.00, 591,457.55 and 247,378.12

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Solution

The fourth proportional to 428,690.00, 591,457.55 and 247,378.12 is: 341,304.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,690.00 : 591,457.55 = 247,378.12 : x
  2. Step 2: Convert to fraction form
    428,690.00/591,457.55 = 247,378.12/x
  3. Step 3: Cross multiply
    428,690.00x = 591,457.55 × 247,378.12
  4. Step 4: Simplify right side
    428,690.00x = 146,313,654,063.27
  5. Step 5: Solve for x
    x = 146,313,654,063.27/428,690.00
  6. Step 6: Final answer
    x = 341,304.10

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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.