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Finding the Fourth Proportional to 366,989.60, 550,484.40 and 278,416.10

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Solution

The fourth proportional to 366,989.60, 550,484.40 and 278,416.10 is: 417,624.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,989.60 : 550,484.40 = 278,416.10 : x
  2. Step 2: Convert to fraction form
    366,989.60/550,484.40 = 278,416.10/x
  3. Step 3: Cross multiply
    366,989.60x = 550,484.40 × 278,416.10
  4. Step 4: Simplify right side
    366,989.60x = 153,263,719,758.84
  5. Step 5: Solve for x
    x = 153,263,719,758.84/366,989.60
  6. Step 6: Final answer
    x = 417,624.15

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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.