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Finding the Fourth Proportional to 571,437.40, 857,520.60 and 272,255.80

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Solution

The fourth proportional to 571,437.40, 857,520.60 and 272,255.80 is: 408,557.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,437.40 : 857,520.60 = 272,255.80 : x
  2. Step 2: Convert to fraction form
    571,437.40/857,520.60 = 272,255.80/x
  3. Step 3: Cross multiply
    571,437.40x = 857,520.60 × 272,255.80
  4. Step 4: Simplify right side
    571,437.40x = 233,464,956,969.48
  5. Step 5: Solve for x
    x = 233,464,956,969.48/571,437.40
  6. Step 6: Final answer
    x = 408,557.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.