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Finding the Fourth Proportional to 264,362.48, 396,606.12 and 86,870

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Solution

The fourth proportional to 264,362.48, 396,606.12 and 86,870 is: 130,325.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    264,362.48 : 396,606.12 = 86,870 : x
  2. Step 2: Convert to fraction form
    264,362.48/396,606.12 = 86,870/x
  3. Step 3: Cross multiply
    264,362.48x = 396,606.12 × 86,870
  4. Step 4: Simplify right side
    264,362.48x = 34,453,173,644.40
  5. Step 5: Solve for x
    x = 34,453,173,644.40/264,362.48
  6. Step 6: Final answer
    x = 130,325.50

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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.