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Finding the Fourth Proportional to 647,071.20, 970,606.80 and 173,829.60

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Solution

The fourth proportional to 647,071.20, 970,606.80 and 173,829.60 is: 260,744.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,071.20 : 970,606.80 = 173,829.60 : x
  2. Step 2: Convert to fraction form
    647,071.20/970,606.80 = 173,829.60/x
  3. Step 3: Cross multiply
    647,071.20x = 970,606.80 × 173,829.60
  4. Step 4: Simplify right side
    647,071.20x = 168,720,191,801.28
  5. Step 5: Solve for x
    x = 168,720,191,801.28/647,071.20
  6. Step 6: Final answer
    x = 260,744.40

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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.