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Finding the Fourth Proportional to 607,257.31, 909,888.96 and 207,680.08

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Solution

The fourth proportional to 607,257.31, 909,888.96 and 207,680.08 is: 311,179.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,257.31 : 909,888.96 = 207,680.08 : x
  2. Step 2: Convert to fraction form
    607,257.31/909,888.96 = 207,680.08/x
  3. Step 3: Cross multiply
    607,257.31x = 909,888.96 × 207,680.08
  4. Step 4: Simplify right side
    607,257.31x = 188,965,812,003.92
  5. Step 5: Solve for x
    x = 188,965,812,003.92/607,257.31
  6. Step 6: Final answer
    x = 311,179.15

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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.