Home / 287,249.64-430,939.08-87,590.22

Finding the Fourth Proportional to 287,249.64, 430,939.08 and 87,590.22

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Solution

The fourth proportional to 287,249.64, 430,939.08 and 87,590.22 is: 131,405.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,249.64 : 430,939.08 = 87,590.22 : x
  2. Step 2: Convert to fraction form
    287,249.64/430,939.08 = 87,590.22/x
  3. Step 3: Cross multiply
    287,249.64x = 430,939.08 × 87,590.22
  4. Step 4: Simplify right side
    287,249.64x = 37,746,048,823.80
  5. Step 5: Solve for x
    x = 37,746,048,823.80/287,249.64
  6. Step 6: Final answer
    x = 131,405.03

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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.