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Finding the Fourth Proportional to 228,386.97, 342,603.50 and 78,607.58

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Solution

The fourth proportional to 228,386.97, 342,603.50 and 78,607.58 is: 117,919.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,386.97 : 342,603.50 = 78,607.58 : x
  2. Step 2: Convert to fraction form
    228,386.97/342,603.50 = 78,607.58/x
  3. Step 3: Cross multiply
    228,386.97x = 342,603.50 × 78,607.58
  4. Step 4: Simplify right side
    228,386.97x = 26,931,229,928.47
  5. Step 5: Solve for x
    x = 26,931,229,928.47/228,386.97
  6. Step 6: Final answer
    x = 117,919.29

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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.