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Finding the Fourth Proportional to 263,275.40, 394,913.10 and 156,987.20

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Solution

The fourth proportional to 263,275.40, 394,913.10 and 156,987.20 is: 235,480.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,275.40 : 394,913.10 = 156,987.20 : x
  2. Step 2: Convert to fraction form
    263,275.40/394,913.10 = 156,987.20/x
  3. Step 3: Cross multiply
    263,275.40x = 394,913.10 × 156,987.20
  4. Step 4: Simplify right side
    263,275.40x = 61,996,301,812.32
  5. Step 5: Solve for x
    x = 61,996,301,812.32/263,275.40
  6. Step 6: Final answer
    x = 235,480.80

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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.