Home / 278,439.58-384,246.89-151,115.21

Finding the Fourth Proportional to 278,439.58, 384,246.89 and 151,115.21

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Solution

The fourth proportional to 278,439.58, 384,246.89 and 151,115.21 is: 208,539.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,439.58 : 384,246.89 = 151,115.21 : x
  2. Step 2: Convert to fraction form
    278,439.58/384,246.89 = 151,115.21/x
  3. Step 3: Cross multiply
    278,439.58x = 384,246.89 × 151,115.21
  4. Step 4: Simplify right side
    278,439.58x = 58,065,549,474.20
  5. Step 5: Solve for x
    x = 58,065,549,474.20/278,439.58
  6. Step 6: Final answer
    x = 208,539.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.