Home / 258,425.37-387,607.28-68,899.95

Finding the Fourth Proportional to 258,425.37, 387,607.28 and 68,899.95

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Solution

The fourth proportional to 258,425.37, 387,607.28 and 68,899.95 is: 103,341.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,425.37 : 387,607.28 = 68,899.95 : x
  2. Step 2: Convert to fraction form
    258,425.37/387,607.28 = 68,899.95/x
  3. Step 3: Cross multiply
    258,425.37x = 387,607.28 × 68,899.95
  4. Step 4: Simplify right side
    258,425.37x = 26,706,121,867.14
  5. Step 5: Solve for x
    x = 26,706,121,867.14/258,425.37
  6. Step 6: Final answer
    x = 103,341.72

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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.