Home / 428,403.12-591,186.24-247,115.40

Finding the Fourth Proportional to 428,403.12, 591,186.24 and 247,115.40

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Solution

The fourth proportional to 428,403.12, 591,186.24 and 247,115.40 is: 341,013.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,403.12 : 591,186.24 = 247,115.40 : x
  2. Step 2: Convert to fraction form
    428,403.12/591,186.24 = 247,115.40/x
  3. Step 3: Cross multiply
    428,403.12x = 591,186.24 × 247,115.40
  4. Step 4: Simplify right side
    428,403.12x = 146,091,224,172.10
  5. Step 5: Solve for x
    x = 146,091,224,172.10/428,403.12
  6. Step 6: Final answer
    x = 341,013.45

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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.