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Finding the Fourth Proportional to 322,402.10, 483,603.15 and 319,291.70

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Solution

The fourth proportional to 322,402.10, 483,603.15 and 319,291.70 is: 478,937.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,402.10 : 483,603.15 = 319,291.70 : x
  2. Step 2: Convert to fraction form
    322,402.10/483,603.15 = 319,291.70/x
  3. Step 3: Cross multiply
    322,402.10x = 483,603.15 × 319,291.70
  4. Step 4: Simplify right side
    322,402.10x = 154,410,471,888.86
  5. Step 5: Solve for x
    x = 154,410,471,888.86/322,402.10
  6. Step 6: Final answer
    x = 478,937.55

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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.