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Finding the Fourth Proportional to 539,758.40, 809,637.60 and 165,780.80

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Solution

The fourth proportional to 539,758.40, 809,637.60 and 165,780.80 is: 248,671.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,758.40 : 809,637.60 = 165,780.80 : x
  2. Step 2: Convert to fraction form
    539,758.40/809,637.60 = 165,780.80/x
  3. Step 3: Cross multiply
    539,758.40x = 809,637.60 × 165,780.80
  4. Step 4: Simplify right side
    539,758.40x = 134,222,369,038.08
  5. Step 5: Solve for x
    x = 134,222,369,038.08/539,758.40
  6. Step 6: Final answer
    x = 248,671.20

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Similar ratio
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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.