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Finding the Fourth Proportional to 326,602.54, 489,934.62 and 126,938.21

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Solution

The fourth proportional to 326,602.54, 489,934.62 and 126,938.21 is: 190,419.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,602.54 : 489,934.62 = 126,938.21 : x
  2. Step 2: Convert to fraction form
    326,602.54/489,934.62 = 126,938.21/x
  3. Step 3: Cross multiply
    326,602.54x = 489,934.62 × 126,938.21
  4. Step 4: Simplify right side
    326,602.54x = 62,191,424,904.67
  5. Step 5: Solve for x
    x = 62,191,424,904.67/326,602.54
  6. Step 6: Final answer
    x = 190,419.29

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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.