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Finding the Fourth Proportional to 391,603.52, 540,402.36 and 230,468.06

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Solution

The fourth proportional to 391,603.52, 540,402.36 and 230,468.06 is: 318,039.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,603.52 : 540,402.36 = 230,468.06 : x
  2. Step 2: Convert to fraction form
    391,603.52/540,402.36 = 230,468.06/x
  3. Step 3: Cross multiply
    391,603.52x = 540,402.36 × 230,468.06
  4. Step 4: Simplify right side
    391,603.52x = 124,545,483,528.62
  5. Step 5: Solve for x
    x = 124,545,483,528.62/391,603.52
  6. Step 6: Final answer
    x = 318,039.74

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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.