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Finding the Fourth Proportional to 390,017.06, 584,026.78 and 269,907.71

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Solution

The fourth proportional to 390,017.06, 584,026.78 and 269,907.71 is: 404,170.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,017.06 : 584,026.78 = 269,907.71 : x
  2. Step 2: Convert to fraction form
    390,017.06/584,026.78 = 269,907.71/x
  3. Step 3: Cross multiply
    390,017.06x = 584,026.78 × 269,907.71
  4. Step 4: Simplify right side
    390,017.06x = 157,633,327,173.57
  5. Step 5: Solve for x
    x = 157,633,327,173.57/390,017.06
  6. Step 6: Final answer
    x = 404,170.34

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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.