Home / 287,013.32-430,536.16-87,340.20

Finding the Fourth Proportional to 287,013.32, 430,536.16 and 87,340.20

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Solution

The fourth proportional to 287,013.32, 430,536.16 and 87,340.20 is: 131,015.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,013.32 : 430,536.16 = 87,340.20 : x
  2. Step 2: Convert to fraction form
    287,013.32/430,536.16 = 87,340.20/x
  3. Step 3: Cross multiply
    287,013.32x = 430,536.16 × 87,340.20
  4. Step 4: Simplify right side
    287,013.32x = 37,603,114,321.63
  5. Step 5: Solve for x
    x = 37,603,114,321.63/287,013.32
  6. Step 6: Final answer
    x = 131,015.22

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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.