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Finding the Fourth Proportional to 571,276.80, 856,915.20 and 144,811.80

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Solution

The fourth proportional to 571,276.80, 856,915.20 and 144,811.80 is: 217,217.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,276.80 : 856,915.20 = 144,811.80 : x
  2. Step 2: Convert to fraction form
    571,276.80/856,915.20 = 144,811.80/x
  3. Step 3: Cross multiply
    571,276.80x = 856,915.20 × 144,811.80
  4. Step 4: Simplify right side
    571,276.80x = 124,091,432,559.36
  5. Step 5: Solve for x
    x = 124,091,432,559.36/571,276.80
  6. Step 6: Final answer
    x = 217,217.70

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Similar ratio
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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.