Home / 428,345.12-591,106.20-247,057.40

Finding the Fourth Proportional to 428,345.12, 591,106.20 and 247,057.40

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Solution

The fourth proportional to 428,345.12, 591,106.20 and 247,057.40 is: 340,933.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,345.12 : 591,106.20 = 247,057.40 : x
  2. Step 2: Convert to fraction form
    428,345.12/591,106.20 = 247,057.40/x
  3. Step 3: Cross multiply
    428,345.12x = 591,106.20 × 247,057.40
  4. Step 4: Simplify right side
    428,345.12x = 146,037,160,895.88
  5. Step 5: Solve for x
    x = 146,037,160,895.88/428,345.12
  6. Step 6: Final answer
    x = 340,933.41

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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.