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Finding the Fourth Proportional to 326,453.12, 489,512.98 and 191,780.22

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Solution

The fourth proportional to 326,453.12, 489,512.98 and 191,780.22 is: 287,572.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,453.12 : 489,512.98 = 191,780.22 : x
  2. Step 2: Convert to fraction form
    326,453.12/489,512.98 = 191,780.22/x
  3. Step 3: Cross multiply
    326,453.12x = 489,512.98 × 191,780.22
  4. Step 4: Simplify right side
    326,453.12x = 93,878,906,038.35
  5. Step 5: Solve for x
    x = 93,878,906,038.35/326,453.12
  6. Step 6: Final answer
    x = 287,572.40

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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.