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Finding the Fourth Proportional to 321,587.49, 482,454.72 and 111,225.21

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Solution

The fourth proportional to 321,587.49, 482,454.72 and 111,225.21 is: 166,863.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,587.49 : 482,454.72 = 111,225.21 : x
  2. Step 2: Convert to fraction form
    321,587.49/482,454.72 = 111,225.21/x
  3. Step 3: Cross multiply
    321,587.49x = 482,454.72 × 111,225.21
  4. Step 4: Simplify right side
    321,587.49x = 53,661,127,547.49
  5. Step 5: Solve for x
    x = 53,661,127,547.49/321,587.49
  6. Step 6: Final answer
    x = 166,863.23

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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.