Home / 288,577.26-432,865.86-78,215.19

Finding the Fourth Proportional to 288,577.26, 432,865.86 and 78,215.19

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Solution

The fourth proportional to 288,577.26, 432,865.86 and 78,215.19 is: 117,322.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,577.26 : 432,865.86 = 78,215.19 : x
  2. Step 2: Convert to fraction form
    288,577.26/432,865.86 = 78,215.19/x
  3. Step 3: Cross multiply
    288,577.26x = 432,865.86 × 78,215.19
  4. Step 4: Simplify right side
    288,577.26x = 33,856,685,484.41
  5. Step 5: Solve for x
    x = 33,856,685,484.41/288,577.26
  6. Step 6: Final answer
    x = 117,322.78

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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.