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Finding the Fourth Proportional to 290,471.52, 400,888.28 and 163,147.12

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Solution

The fourth proportional to 290,471.52, 400,888.28 and 163,147.12 is: 225,164.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,471.52 : 400,888.28 = 163,147.12 : x
  2. Step 2: Convert to fraction form
    290,471.52/400,888.28 = 163,147.12/x
  3. Step 3: Cross multiply
    290,471.52x = 400,888.28 × 163,147.12
  4. Step 4: Simplify right side
    290,471.52x = 65,403,768,323.75
  5. Step 5: Solve for x
    x = 65,403,768,323.75/290,471.52
  6. Step 6: Final answer
    x = 225,164.13

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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.