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Finding the Fourth Proportional to 326,393.32, 489,740.64 and 148,954.72

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Solution

The fourth proportional to 326,393.32, 489,740.64 and 148,954.72 is: 223,500.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,393.32 : 489,740.64 = 148,954.72 : x
  2. Step 2: Convert to fraction form
    326,393.32/489,740.64 = 148,954.72/x
  3. Step 3: Cross multiply
    326,393.32x = 489,740.64 × 148,954.72
  4. Step 4: Simplify right side
    326,393.32x = 72,949,179,903.82
  5. Step 5: Solve for x
    x = 72,949,179,903.82/326,393.32
  6. Step 6: Final answer
    x = 223,500.84

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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.