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Finding the Fourth Proportional to 279,065.60, 418,598.40 and 89,525.60

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Solution

The fourth proportional to 279,065.60, 418,598.40 and 89,525.60 is: 134,288.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,065.60 : 418,598.40 = 89,525.60 : x
  2. Step 2: Convert to fraction form
    279,065.60/418,598.40 = 89,525.60/x
  3. Step 3: Cross multiply
    279,065.60x = 418,598.40 × 89,525.60
  4. Step 4: Simplify right side
    279,065.60x = 37,475,272,919.04
  5. Step 5: Solve for x
    x = 37,475,272,919.04/279,065.60
  6. Step 6: Final answer
    x = 134,288.40

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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.