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Finding the Fourth Proportional to 326,313.60, 489,211.20 and 178,569.60

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Solution

The fourth proportional to 326,313.60, 489,211.20 and 178,569.60 is: 267,712.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,313.60 : 489,211.20 = 178,569.60 : x
  2. Step 2: Convert to fraction form
    326,313.60/489,211.20 = 178,569.60/x
  3. Step 3: Cross multiply
    326,313.60x = 489,211.20 × 178,569.60
  4. Step 4: Simplify right side
    326,313.60x = 87,358,248,299.52
  5. Step 5: Solve for x
    x = 87,358,248,299.52/326,313.60
  6. Step 6: Final answer
    x = 267,712.56

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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.