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Finding the Fourth Proportional to 255,638.16, 383,627.88 and 89,426.16

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Solution

The fourth proportional to 255,638.16, 383,627.88 and 89,426.16 is: 134,198.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,638.16 : 383,627.88 = 89,426.16 : x
  2. Step 2: Convert to fraction form
    255,638.16/383,627.88 = 89,426.16/x
  3. Step 3: Cross multiply
    255,638.16x = 383,627.88 × 89,426.16
  4. Step 4: Simplify right side
    255,638.16x = 34,306,368,177.34
  5. Step 5: Solve for x
    x = 34,306,368,177.34/255,638.16
  6. Step 6: Final answer
    x = 134,198.93

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1.5x scale

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.