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Finding the Fourth Proportional to 408,851.31, 564,220.15 and 225,111.25

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Solution

The fourth proportional to 408,851.31, 564,220.15 and 225,111.25 is: 310,656.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,851.31 : 564,220.15 = 225,111.25 : x
  2. Step 2: Convert to fraction form
    408,851.31/564,220.15 = 225,111.25/x
  3. Step 3: Cross multiply
    408,851.31x = 564,220.15 × 225,111.25
  4. Step 4: Simplify right side
    408,851.31x = 127,012,303,241.69
  5. Step 5: Solve for x
    x = 127,012,303,241.69/408,851.31
  6. Step 6: Final answer
    x = 310,656.47

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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.