Home / 304,345.12-420,109.20-229,111.84

Finding the Fourth Proportional to 304,345.12, 420,109.20 and 229,111.84

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Solution

The fourth proportional to 304,345.12, 420,109.20 and 229,111.84 is: 316,259.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,345.12 : 420,109.20 = 229,111.84 : x
  2. Step 2: Convert to fraction form
    304,345.12/420,109.20 = 229,111.84/x
  3. Step 3: Cross multiply
    304,345.12x = 420,109.20 × 229,111.84
  4. Step 4: Simplify right side
    304,345.12x = 96,251,991,812.93
  5. Step 5: Solve for x
    x = 96,251,991,812.93/304,345.12
  6. Step 6: Final answer
    x = 316,259.36

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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.