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Finding the Fourth Proportional to 370,881.95, 511,882.62 and 217,920.11

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Solution

The fourth proportional to 370,881.95, 511,882.62 and 217,920.11 is: 300,768.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,881.95 : 511,882.62 = 217,920.11 : x
  2. Step 2: Convert to fraction form
    370,881.95/511,882.62 = 217,920.11/x
  3. Step 3: Cross multiply
    370,881.95x = 511,882.62 × 217,920.11
  4. Step 4: Simplify right side
    370,881.95x = 111,549,518,137.20
  5. Step 5: Solve for x
    x = 111,549,518,137.20/370,881.95
  6. Step 6: Final answer
    x = 300,768.26

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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.