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Finding the Fourth Proportional to 571,281.90, 856,925.91 and 171,919.95

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Solution

The fourth proportional to 571,281.90, 856,925.91 and 171,919.95 is: 257,880.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,281.90 : 856,925.91 = 171,919.95 : x
  2. Step 2: Convert to fraction form
    571,281.90/856,925.91 = 171,919.95/x
  3. Step 3: Cross multiply
    571,281.90x = 856,925.91 × 171,919.95
  4. Step 4: Simplify right side
    571,281.90x = 147,322,659,600.91
  5. Step 5: Solve for x
    x = 147,322,659,600.91/571,281.90
  6. Step 6: Final answer
    x = 257,880.85

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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.