Home / 428,434.79-591,217.25-247,135.93

Finding the Fourth Proportional to 428,434.79, 591,217.25 and 247,135.93

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Solution

The fourth proportional to 428,434.79, 591,217.25 and 247,135.93 is: 341,034.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,434.79 : 591,217.25 = 247,135.93 : x
  2. Step 2: Convert to fraction form
    428,434.79/591,217.25 = 247,135.93/x
  3. Step 3: Cross multiply
    428,434.79x = 591,217.25 × 247,135.93
  4. Step 4: Simplify right side
    428,434.79x = 146,111,022,197.07
  5. Step 5: Solve for x
    x = 146,111,022,197.07/428,434.79
  6. Step 6: Final answer
    x = 341,034.45

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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.