Home / 287,014.32-430,537.66-87,341.20

Finding the Fourth Proportional to 287,014.32, 430,537.66 and 87,341.20

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Solution

The fourth proportional to 287,014.32, 430,537.66 and 87,341.20 is: 131,016.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,014.32 : 430,537.66 = 87,341.20 : x
  2. Step 2: Convert to fraction form
    287,014.32/430,537.66 = 87,341.20/x
  3. Step 3: Cross multiply
    287,014.32x = 430,537.66 × 87,341.20
  4. Step 4: Simplify right side
    287,014.32x = 37,603,675,869.59
  5. Step 5: Solve for x
    x = 37,603,675,869.59/287,014.32
  6. Step 6: Final answer
    x = 131,016.72

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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.