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Finding the Fourth Proportional to 398,724.21, 597,409.29 and 240,620.46

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Solution

The fourth proportional to 398,724.21, 597,409.29 and 240,620.46 is: 360,522.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,724.21 : 597,409.29 = 240,620.46 : x
  2. Step 2: Convert to fraction form
    398,724.21/597,409.29 = 240,620.46/x
  3. Step 3: Cross multiply
    398,724.21x = 597,409.29 × 240,620.46
  4. Step 4: Simplify right side
    398,724.21x = 143,748,898,168.07
  5. Step 5: Solve for x
    x = 143,748,898,168.07/398,724.21
  6. Step 6: Final answer
    x = 360,522.12

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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.