Home / 515,030.72-772,716-199,489.28

Finding the Fourth Proportional to 515,030.72, 772,716 and 199,489.28

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Solution

The fourth proportional to 515,030.72, 772,716 and 199,489.28 is: 299,299.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,030.72 : 772,716 = 199,489.28 : x
  2. Step 2: Convert to fraction form
    515,030.72/772,716 = 199,489.28/x
  3. Step 3: Cross multiply
    515,030.72x = 772,716 × 199,489.28
  4. Step 4: Simplify right side
    515,030.72x = 154,148,558,484.48
  5. Step 5: Solve for x
    x = 154,148,558,484.48/515,030.72
  6. Step 6: Final answer
    x = 299,299.74

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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.