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Finding the Fourth Proportional to 256,879.18, 385,223.18 and 88,352.20

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Solution

The fourth proportional to 256,879.18, 385,223.18 and 88,352.20 is: 132,495.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,879.18 : 385,223.18 = 88,352.20 : x
  2. Step 2: Convert to fraction form
    256,879.18/385,223.18 = 88,352.20/x
  3. Step 3: Cross multiply
    256,879.18x = 385,223.18 × 88,352.20
  4. Step 4: Simplify right side
    256,879.18x = 34,035,315,444.00
  5. Step 5: Solve for x
    x = 34,035,315,444.00/256,879.18
  6. Step 6: Final answer
    x = 132,495.42

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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.