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Finding the Fourth Proportional to 398,718.21, 597,400.29 and 240,614.46

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Solution

The fourth proportional to 398,718.21, 597,400.29 and 240,614.46 is: 360,513.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,718.21 : 597,400.29 = 240,614.46 : x
  2. Step 2: Convert to fraction form
    398,718.21/597,400.29 = 240,614.46/x
  3. Step 3: Cross multiply
    398,718.21x = 597,400.29 × 240,614.46
  4. Step 4: Simplify right side
    398,718.21x = 143,743,148,182.19
  5. Step 5: Solve for x
    x = 143,743,148,182.19/398,718.21
  6. Step 6: Final answer
    x = 360,513.13

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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.