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Finding the Fourth Proportional to 286,980.03, 430,494.08 and 87,301.94

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Solution

The fourth proportional to 286,980.03, 430,494.08 and 87,301.94 is: 130,960.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,980.03 : 430,494.08 = 87,301.94 : x
  2. Step 2: Convert to fraction form
    286,980.03/430,494.08 = 87,301.94/x
  3. Step 3: Cross multiply
    286,980.03x = 430,494.08 × 87,301.94
  4. Step 4: Simplify right side
    286,980.03x = 37,582,965,753.54
  5. Step 5: Solve for x
    x = 37,582,965,753.54/286,980.03
  6. Step 6: Final answer
    x = 130,960.21

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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.