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Finding the Fourth Proportional to 197,560.32, 272,630.44 and 112,678.80

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Solution

The fourth proportional to 197,560.32, 272,630.44 and 112,678.80 is: 155,495.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,560.32 : 272,630.44 = 112,678.80 : x
  2. Step 2: Convert to fraction form
    197,560.32/272,630.44 = 112,678.80/x
  3. Step 3: Cross multiply
    197,560.32x = 272,630.44 × 112,678.80
  4. Step 4: Simplify right side
    197,560.32x = 30,719,670,822.67
  5. Step 5: Solve for x
    x = 30,719,670,822.67/197,560.32
  6. Step 6: Final answer
    x = 155,495.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.