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Finding the Fourth Proportional to 228,385.04, 342,600.57 and 78,605.64

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Solution

The fourth proportional to 228,385.04, 342,600.57 and 78,605.64 is: 117,916.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,385.04 : 342,600.57 = 78,605.64 : x
  2. Step 2: Convert to fraction form
    228,385.04/342,600.57 = 78,605.64/x
  3. Step 3: Cross multiply
    228,385.04x = 342,600.57 × 78,605.64
  4. Step 4: Simplify right side
    228,385.04x = 26,930,337,069.21
  5. Step 5: Solve for x
    x = 26,930,337,069.21/228,385.04
  6. Step 6: Final answer
    x = 117,916.38

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1.5x scale

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.