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Finding the Fourth Proportional to 647,152.20, 970,728.30 and 173,885.40

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Solution

The fourth proportional to 647,152.20, 970,728.30 and 173,885.40 is: 260,828.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,152.20 : 970,728.30 = 173,885.40 : x
  2. Step 2: Convert to fraction form
    647,152.20/970,728.30 = 173,885.40/x
  3. Step 3: Cross multiply
    647,152.20x = 970,728.30 × 173,885.40
  4. Step 4: Simplify right side
    647,152.20x = 168,795,478,736.82
  5. Step 5: Solve for x
    x = 168,795,478,736.82/647,152.20
  6. Step 6: Final answer
    x = 260,828.10

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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.