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Finding the Fourth Proportional to 402,603.10, 603,904.65 and 269,892.70

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Solution

The fourth proportional to 402,603.10, 603,904.65 and 269,892.70 is: 404,839.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,603.10 : 603,904.65 = 269,892.70 : x
  2. Step 2: Convert to fraction form
    402,603.10/603,904.65 = 269,892.70/x
  3. Step 3: Cross multiply
    402,603.10x = 603,904.65 × 269,892.70
  4. Step 4: Simplify right side
    402,603.10x = 162,989,456,531.06
  5. Step 5: Solve for x
    x = 162,989,456,531.06/402,603.10
  6. Step 6: Final answer
    x = 404,839.05

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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.