Home / 386,508.27-579,756.65-133,972.59

Finding the Fourth Proportional to 386,508.27, 579,756.65 and 133,972.59

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Solution

The fourth proportional to 386,508.27, 579,756.65 and 133,972.59 is: 200,956.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,508.27 : 579,756.65 = 133,972.59 : x
  2. Step 2: Convert to fraction form
    386,508.27/579,756.65 = 133,972.59/x
  3. Step 3: Cross multiply
    386,508.27x = 579,756.65 × 133,972.59
  4. Step 4: Simplify right side
    386,508.27x = 77,671,499,300.36
  5. Step 5: Solve for x
    x = 77,671,499,300.36/386,508.27
  6. Step 6: Final answer
    x = 200,956.89

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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.