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Finding the Fourth Proportional to 228,381.60, 342,595.41 and 78,602.20

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Solution

The fourth proportional to 228,381.60, 342,595.41 and 78,602.20 is: 117,911.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,381.60 : 342,595.41 = 78,602.20 : x
  2. Step 2: Convert to fraction form
    228,381.60/342,595.41 = 78,602.20/x
  3. Step 3: Cross multiply
    228,381.60x = 342,595.41 × 78,602.20
  4. Step 4: Simplify right side
    228,381.60x = 26,928,752,935.90
  5. Step 5: Solve for x
    x = 26,928,752,935.90/228,381.60
  6. Step 6: Final answer
    x = 117,911.22

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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.