Home / 304,638.24-420,400.08-168,679.20

Finding the Fourth Proportional to 304,638.24, 420,400.08 and 168,679.20

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Solution

The fourth proportional to 304,638.24, 420,400.08 and 168,679.20 is: 232,776.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,638.24 : 420,400.08 = 168,679.20 : x
  2. Step 2: Convert to fraction form
    304,638.24/420,400.08 = 168,679.20/x
  3. Step 3: Cross multiply
    304,638.24x = 420,400.08 × 168,679.20
  4. Step 4: Simplify right side
    304,638.24x = 70,912,749,174.34
  5. Step 5: Solve for x
    x = 70,912,749,174.34/304,638.24
  6. Step 6: Final answer
    x = 232,776.91

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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.