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Finding the Fourth Proportional to 228,176.10, 342,264.15 and 139,529.70

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Solution

The fourth proportional to 228,176.10, 342,264.15 and 139,529.70 is: 209,294.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,176.10 : 342,264.15 = 139,529.70 : x
  2. Step 2: Convert to fraction form
    228,176.10/342,264.15 = 139,529.70/x
  3. Step 3: Cross multiply
    228,176.10x = 342,264.15 × 139,529.70
  4. Step 4: Simplify right side
    228,176.10x = 47,756,014,170.26
  5. Step 5: Solve for x
    x = 47,756,014,170.26/228,176.10
  6. Step 6: Final answer
    x = 209,294.55

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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.