Home / 286,685.15-430,044.12-87,012.05

Finding the Fourth Proportional to 286,685.15, 430,044.12 and 87,012.05

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Solution

The fourth proportional to 286,685.15, 430,044.12 and 87,012.05 is: 130,523.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,685.15 : 430,044.12 = 87,012.05 : x
  2. Step 2: Convert to fraction form
    286,685.15/430,044.12 = 87,012.05/x
  3. Step 3: Cross multiply
    286,685.15x = 430,044.12 × 87,012.05
  4. Step 4: Simplify right side
    286,685.15x = 37,419,018,321.43
  5. Step 5: Solve for x
    x = 37,419,018,321.43/286,685.15
  6. Step 6: Final answer
    x = 130,523.05

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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.