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Finding the Fourth Proportional to 279,400.80, 385,551.60 and 152,073.60

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Solution

The fourth proportional to 279,400.80, 385,551.60 and 152,073.60 is: 209,849.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,400.80 : 385,551.60 = 152,073.60 : x
  2. Step 2: Convert to fraction form
    279,400.80/385,551.60 = 152,073.60/x
  3. Step 3: Cross multiply
    279,400.80x = 385,551.60 × 152,073.60
  4. Step 4: Simplify right side
    279,400.80x = 58,632,219,797.76
  5. Step 5: Solve for x
    x = 58,632,219,797.76/279,400.80
  6. Step 6: Final answer
    x = 209,849.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.