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Finding the Fourth Proportional to 326,686.38, 489,373.50 and 148,948.92

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Solution

The fourth proportional to 326,686.38, 489,373.50 and 148,948.92 is: 223,124.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,686.38 : 489,373.50 = 148,948.92 : x
  2. Step 2: Convert to fraction form
    326,686.38/489,373.50 = 148,948.92/x
  3. Step 3: Cross multiply
    326,686.38x = 489,373.50 × 148,948.92
  4. Step 4: Simplify right side
    326,686.38x = 72,891,654,301.62
  5. Step 5: Solve for x
    x = 72,891,654,301.62/326,686.38
  6. Step 6: Final answer
    x = 223,124.25

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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.