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Finding the Fourth Proportional to 321,708.49, 482,248.89 and 153,183.55

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Solution

The fourth proportional to 321,708.49, 482,248.89 and 153,183.55 is: 229,625.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,708.49 : 482,248.89 = 153,183.55 : x
  2. Step 2: Convert to fraction form
    321,708.49/482,248.89 = 153,183.55/x
  3. Step 3: Cross multiply
    321,708.49x = 482,248.89 × 153,183.55
  4. Step 4: Simplify right side
    321,708.49x = 73,872,596,953.76
  5. Step 5: Solve for x
    x = 73,872,596,953.76/321,708.49
  6. Step 6: Final answer
    x = 229,625.89

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1.5x scale

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.