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Finding the Fourth Proportional to 326,915.60, 489,459.77 and 176,617.40

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Solution

The fourth proportional to 326,915.60, 489,459.77 and 176,617.40 is: 264,432.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,915.60 : 489,459.77 = 176,617.40 : x
  2. Step 2: Convert to fraction form
    326,915.60/489,459.77 = 176,617.40/x
  3. Step 3: Cross multiply
    326,915.60x = 489,459.77 × 176,617.40
  4. Step 4: Simplify right side
    326,915.60x = 86,447,111,982.00
  5. Step 5: Solve for x
    x = 86,447,111,982.00/326,915.60
  6. Step 6: Final answer
    x = 264,432.51

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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.