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Finding the Fourth Proportional to 290,545.52, 400,950.41 and 163,218.38

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Solution

The fourth proportional to 290,545.52, 400,950.41 and 163,218.38 is: 225,240.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,545.52 : 400,950.41 = 163,218.38 : x
  2. Step 2: Convert to fraction form
    290,545.52/400,950.41 = 163,218.38/x
  3. Step 3: Cross multiply
    290,545.52x = 400,950.41 × 163,218.38
  4. Step 4: Simplify right side
    290,545.52x = 65,442,473,559.69
  5. Step 5: Solve for x
    x = 65,442,473,559.69/290,545.52
  6. Step 6: Final answer
    x = 225,240.01

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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.