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Finding the Fourth Proportional to 175,319.20, 262,978.80 and 147,325.60

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Solution

The fourth proportional to 175,319.20, 262,978.80 and 147,325.60 is: 220,988.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,319.20 : 262,978.80 = 147,325.60 : x
  2. Step 2: Convert to fraction form
    175,319.20/262,978.80 = 147,325.60/x
  3. Step 3: Cross multiply
    175,319.20x = 262,978.80 × 147,325.60
  4. Step 4: Simplify right side
    175,319.20x = 38,743,509,497.28
  5. Step 5: Solve for x
    x = 38,743,509,497.28/175,319.20
  6. Step 6: Final answer
    x = 220,988.40

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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.