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Finding the Fourth Proportional to 262,321.20, 392,574.60 and 157,215.60

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Solution

The fourth proportional to 262,321.20, 392,574.60 and 157,215.60 is: 235,279.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,321.20 : 392,574.60 = 157,215.60 : x
  2. Step 2: Convert to fraction form
    262,321.20/392,574.60 = 157,215.60/x
  3. Step 3: Cross multiply
    262,321.20x = 392,574.60 × 157,215.60
  4. Step 4: Simplify right side
    262,321.20x = 61,718,851,283.76
  5. Step 5: Solve for x
    x = 61,718,851,283.76/262,321.20
  6. Step 6: Final answer
    x = 235,279.69

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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.