Home / 278,282.43-384,029.88-157,421.16

Finding the Fourth Proportional to 278,282.43, 384,029.88 and 157,421.16

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Solution

The fourth proportional to 278,282.43, 384,029.88 and 157,421.16 is: 217,241.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,282.43 : 384,029.88 = 157,421.16 : x
  2. Step 2: Convert to fraction form
    278,282.43/384,029.88 = 157,421.16/x
  3. Step 3: Cross multiply
    278,282.43x = 384,029.88 × 157,421.16
  4. Step 4: Simplify right side
    278,282.43x = 60,454,429,184.26
  5. Step 5: Solve for x
    x = 60,454,429,184.26/278,282.43
  6. Step 6: Final answer
    x = 217,241.27

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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.