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Finding the Fourth Proportional to 326,171.61, 489,181.68 and 89,533.35

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Solution

The fourth proportional to 326,171.61, 489,181.68 and 89,533.35 is: 134,279.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,171.61 : 489,181.68 = 89,533.35 : x
  2. Step 2: Convert to fraction form
    326,171.61/489,181.68 = 89,533.35/x
  3. Step 3: Cross multiply
    326,171.61x = 489,181.68 × 89,533.35
  4. Step 4: Simplify right side
    326,171.61x = 43,798,074,569.03
  5. Step 5: Solve for x
    x = 43,798,074,569.03/326,171.61
  6. Step 6: Final answer
    x = 134,279.24

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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.