Home / 278,380.08-384,530.76-213,455.34

Finding the Fourth Proportional to 278,380.08, 384,530.76 and 213,455.34

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Solution

The fourth proportional to 278,380.08, 384,530.76 and 213,455.34 is: 294,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,380.08 : 384,530.76 = 213,455.34 : x
  2. Step 2: Convert to fraction form
    278,380.08/384,530.76 = 213,455.34/x
  3. Step 3: Cross multiply
    278,380.08x = 384,530.76 × 213,455.34
  4. Step 4: Simplify right side
    278,380.08x = 82,080,144,116.26
  5. Step 5: Solve for x
    x = 82,080,144,116.26/278,380.08
  6. Step 6: Final answer
    x = 294,849.20

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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.