Home / 228,981.08-315,787.04-142,948.01

Finding the Fourth Proportional to 228,981.08, 315,787.04 and 142,948.01

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Solution

The fourth proportional to 228,981.08, 315,787.04 and 142,948.01 is: 197,139.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,981.08 : 315,787.04 = 142,948.01 : x
  2. Step 2: Convert to fraction form
    228,981.08/315,787.04 = 142,948.01/x
  3. Step 3: Cross multiply
    228,981.08x = 315,787.04 × 142,948.01
  4. Step 4: Simplify right side
    228,981.08x = 45,141,127,372.86
  5. Step 5: Solve for x
    x = 45,141,127,372.86/228,981.08
  6. Step 6: Final answer
    x = 197,139.11

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1.5x scale

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.