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Finding the Fourth Proportional to 305,281.51, 421,267.50 and 169,302.69

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Solution

The fourth proportional to 305,281.51, 421,267.50 and 169,302.69 is: 233,626.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,281.51 : 421,267.50 = 169,302.69 : x
  2. Step 2: Convert to fraction form
    305,281.51/421,267.50 = 169,302.69/x
  3. Step 3: Cross multiply
    305,281.51x = 421,267.50 × 169,302.69
  4. Step 4: Simplify right side
    305,281.51x = 71,321,720,959.58
  5. Step 5: Solve for x
    x = 71,321,720,959.58/305,281.51
  6. Step 6: Final answer
    x = 233,626.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.