Home / 278,844.96-417,172.54-215,184.12

Finding the Fourth Proportional to 278,844.96, 417,172.54 and 215,184.12

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Solution

The fourth proportional to 278,844.96, 417,172.54 and 215,184.12 is: 321,931.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,844.96 : 417,172.54 = 215,184.12 : x
  2. Step 2: Convert to fraction form
    278,844.96/417,172.54 = 215,184.12/x
  3. Step 3: Cross multiply
    278,844.96x = 417,172.54 × 215,184.12
  4. Step 4: Simplify right side
    278,844.96x = 89,768,905,908.06
  5. Step 5: Solve for x
    x = 89,768,905,908.06/278,844.96
  6. Step 6: Final answer
    x = 321,931.25

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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.