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Finding the Fourth Proportional to 291,860.80, 437,791.20 and 81,498.40

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Solution

The fourth proportional to 291,860.80, 437,791.20 and 81,498.40 is: 122,247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,860.80 : 437,791.20 = 81,498.40 : x
  2. Step 2: Convert to fraction form
    291,860.80/437,791.20 = 81,498.40/x
  3. Step 3: Cross multiply
    291,860.80x = 437,791.20 × 81,498.40
  4. Step 4: Simplify right side
    291,860.80x = 35,679,282,334.08
  5. Step 5: Solve for x
    x = 35,679,282,334.08/291,860.80
  6. Step 6: Final answer
    x = 122,247.60

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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.