Home / 279,578.12-385,815.15-152,255.84

Finding the Fourth Proportional to 279,578.12, 385,815.15 and 152,255.84

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Solution

The fourth proportional to 279,578.12, 385,815.15 and 152,255.84 is: 210,111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,578.12 : 385,815.15 = 152,255.84 : x
  2. Step 2: Convert to fraction form
    279,578.12/385,815.15 = 152,255.84/x
  3. Step 3: Cross multiply
    279,578.12x = 385,815.15 × 152,255.84
  4. Step 4: Simplify right side
    279,578.12x = 58,742,607,818.90
  5. Step 5: Solve for x
    x = 58,742,607,818.90/279,578.12
  6. Step 6: Final answer
    x = 210,111.61

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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.