Home / 228,981.09-315,787.17-142,948.02

Finding the Fourth Proportional to 228,981.09, 315,787.17 and 142,948.02

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Solution

The fourth proportional to 228,981.09, 315,787.17 and 142,948.02 is: 197,139.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,981.09 : 315,787.17 = 142,948.02 : x
  2. Step 2: Convert to fraction form
    228,981.09/315,787.17 = 142,948.02/x
  3. Step 3: Cross multiply
    228,981.09x = 315,787.17 × 142,948.02
  4. Step 4: Simplify right side
    228,981.09x = 45,141,150,692.90
  5. Step 5: Solve for x
    x = 45,141,150,692.90/228,981.09
  6. Step 6: Final answer
    x = 197,139.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.