Home / 420,020.64-579,642.48-229,044.51

Finding the Fourth Proportional to 420,020.64, 579,642.48 and 229,044.51

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Solution

The fourth proportional to 420,020.64, 579,642.48 and 229,044.51 is: 316,089.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,020.64 : 579,642.48 = 229,044.51 : x
  2. Step 2: Convert to fraction form
    420,020.64/579,642.48 = 229,044.51/x
  3. Step 3: Cross multiply
    420,020.64x = 579,642.48 × 229,044.51
  4. Step 4: Simplify right side
    420,020.64x = 132,763,927,806.79
  5. Step 5: Solve for x
    x = 132,763,927,806.79/420,020.64
  6. Step 6: Final answer
    x = 316,089.06

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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.