Home / 386,315.13-579,632.13-208,612.89

Finding the Fourth Proportional to 386,315.13, 579,632.13 and 208,612.89

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Solution

The fourth proportional to 386,315.13, 579,632.13 and 208,612.89 is: 313,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,315.13 : 579,632.13 = 208,612.89 : x
  2. Step 2: Convert to fraction form
    386,315.13/579,632.13 = 208,612.89/x
  3. Step 3: Cross multiply
    386,315.13x = 579,632.13 × 208,612.89
  4. Step 4: Simplify right side
    386,315.13x = 120,918,733,776.16
  5. Step 5: Solve for x
    x = 120,918,733,776.16/386,315.13
  6. Step 6: Final answer
    x = 313,005.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.