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Finding the Fourth Proportional to 345,309.32, 518,440.98 and 238,442.48

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Solution

The fourth proportional to 345,309.32, 518,440.98 and 238,442.48 is: 357,993.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,309.32 : 518,440.98 = 238,442.48 : x
  2. Step 2: Convert to fraction form
    345,309.32/518,440.98 = 238,442.48/x
  3. Step 3: Cross multiply
    345,309.32x = 518,440.98 × 238,442.48
  4. Step 4: Simplify right side
    345,309.32x = 123,618,353,004.83
  5. Step 5: Solve for x
    x = 123,618,353,004.83/345,309.32
  6. Step 6: Final answer
    x = 357,993.10

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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.