Home / 438,874.08-658,333.80-139,378.20

Finding the Fourth Proportional to 438,874.08, 658,333.80 and 139,378.20

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Solution

The fourth proportional to 438,874.08, 658,333.80 and 139,378.20 is: 209,074.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,874.08 : 658,333.80 = 139,378.20 : x
  2. Step 2: Convert to fraction form
    438,874.08/658,333.80 = 139,378.20/x
  3. Step 3: Cross multiply
    438,874.08x = 658,333.80 × 139,378.20
  4. Step 4: Simplify right side
    438,874.08x = 91,757,380,043.16
  5. Step 5: Solve for x
    x = 91,757,380,043.16/438,874.08
  6. Step 6: Final answer
    x = 209,074.50

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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.