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Finding the Fourth Proportional to 571,532.15, 857,188.91 and 287,143.90

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Solution

The fourth proportional to 571,532.15, 857,188.91 and 287,143.90 is: 430,660.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,532.15 : 857,188.91 = 287,143.90 : x
  2. Step 2: Convert to fraction form
    571,532.15/857,188.91 = 287,143.90/x
  3. Step 3: Cross multiply
    571,532.15x = 857,188.91 × 287,143.90
  4. Step 4: Simplify right side
    571,532.15x = 246,136,565,229.04
  5. Step 5: Solve for x
    x = 246,136,565,229.04/571,532.15
  6. Step 6: Final answer
    x = 430,660.92

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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.