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Finding the Fourth Proportional to 647,115.20, 970,672.80 and 173,848.40

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Solution

The fourth proportional to 647,115.20, 970,672.80 and 173,848.40 is: 260,772.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,115.20 : 970,672.80 = 173,848.40 : x
  2. Step 2: Convert to fraction form
    647,115.20/970,672.80 = 173,848.40/x
  3. Step 3: Cross multiply
    647,115.20x = 970,672.80 × 173,848.40
  4. Step 4: Simplify right side
    647,115.20x = 168,749,913,203.52
  5. Step 5: Solve for x
    x = 168,749,913,203.52/647,115.20
  6. Step 6: Final answer
    x = 260,772.60

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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.