Home / 284,823.12-427,320.32-85,150

Finding the Fourth Proportional to 284,823.12, 427,320.32 and 85,150

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Solution

The fourth proportional to 284,823.12, 427,320.32 and 85,150 is: 127,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,823.12 : 427,320.32 = 85,150 : x
  2. Step 2: Convert to fraction form
    284,823.12/427,320.32 = 85,150/x
  3. Step 3: Cross multiply
    284,823.12x = 427,320.32 × 85,150
  4. Step 4: Simplify right side
    284,823.12x = 36,386,325,248
  5. Step 5: Solve for x
    x = 36,386,325,248/284,823.12
  6. Step 6: Final answer
    x = 127,750.60

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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.