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Finding the Fourth Proportional to 400,528.80, 552,724.16 and 219,236.22

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Solution

The fourth proportional to 400,528.80, 552,724.16 and 219,236.22 is: 302,542.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,528.80 : 552,724.16 = 219,236.22 : x
  2. Step 2: Convert to fraction form
    400,528.80/552,724.16 = 219,236.22/x
  3. Step 3: Cross multiply
    400,528.80x = 552,724.16 × 219,236.22
  4. Step 4: Simplify right side
    400,528.80x = 121,177,154,444.89
  5. Step 5: Solve for x
    x = 121,177,154,444.89/400,528.80
  6. Step 6: Final answer
    x = 302,542.92

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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.