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Finding the Fourth Proportional to 255,999.90, 383,999.85 and 162,572.70

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Solution

The fourth proportional to 255,999.90, 383,999.85 and 162,572.70 is: 243,859.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,999.90 : 383,999.85 = 162,572.70 : x
  2. Step 2: Convert to fraction form
    255,999.90/383,999.85 = 162,572.70/x
  3. Step 3: Cross multiply
    255,999.90x = 383,999.85 × 162,572.70
  4. Step 4: Simplify right side
    255,999.90x = 62,427,892,414.10
  5. Step 5: Solve for x
    x = 62,427,892,414.10/255,999.90
  6. Step 6: Final answer
    x = 243,859.05

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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.