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Finding the Fourth Proportional to 228,522.60, 342,127.80 and 139,949.10

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Solution

The fourth proportional to 228,522.60, 342,127.80 and 139,949.10 is: 209,521.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,522.60 : 342,127.80 = 139,949.10 : x
  2. Step 2: Convert to fraction form
    228,522.60/342,127.80 = 139,949.10/x
  3. Step 3: Cross multiply
    228,522.60x = 342,127.80 × 139,949.10
  4. Step 4: Simplify right side
    228,522.60x = 47,880,477,694.98
  5. Step 5: Solve for x
    x = 47,880,477,694.98/228,522.60
  6. Step 6: Final answer
    x = 209,521.85

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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.