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Finding the Fourth Proportional to 326,072.40, 489,108.60 and 148,925.40

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Solution

The fourth proportional to 326,072.40, 489,108.60 and 148,925.40 is: 223,388.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,072.40 : 489,108.60 = 148,925.40 : x
  2. Step 2: Convert to fraction form
    326,072.40/489,108.60 = 148,925.40/x
  3. Step 3: Cross multiply
    326,072.40x = 489,108.60 × 148,925.40
  4. Step 4: Simplify right side
    326,072.40x = 72,840,693,898.44
  5. Step 5: Solve for x
    x = 72,840,693,898.44/326,072.40
  6. Step 6: Final answer
    x = 223,388.10

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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.