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Finding the Fourth Proportional to 428,858.08, 591,851 and 247,603.24

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Solution

The fourth proportional to 428,858.08, 591,851 and 247,603.24 is: 341,707.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,858.08 : 591,851 = 247,603.24 : x
  2. Step 2: Convert to fraction form
    428,858.08/591,851 = 247,603.24/x
  3. Step 3: Cross multiply
    428,858.08x = 591,851 × 247,603.24
  4. Step 4: Simplify right side
    428,858.08x = 146,544,225,197.24
  5. Step 5: Solve for x
    x = 146,544,225,197.24/428,858.08
  6. Step 6: Final answer
    x = 341,707.97

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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.