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Finding the Fourth Proportional to 157,280.80, 235,921.20 and 140,222.20

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Solution

The fourth proportional to 157,280.80, 235,921.20 and 140,222.20 is: 210,333.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,280.80 : 235,921.20 = 140,222.20 : x
  2. Step 2: Convert to fraction form
    157,280.80/235,921.20 = 140,222.20/x
  3. Step 3: Cross multiply
    157,280.80x = 235,921.20 × 140,222.20
  4. Step 4: Simplify right side
    157,280.80x = 33,081,389,690.64
  5. Step 5: Solve for x
    x = 33,081,389,690.64/157,280.80
  6. Step 6: Final answer
    x = 210,333.30

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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.