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Finding the Fourth Proportional to 326,461.10, 489,680.22 and 134,328.59

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Solution

The fourth proportional to 326,461.10, 489,680.22 and 134,328.59 is: 201,488.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,461.10 : 489,680.22 = 134,328.59 : x
  2. Step 2: Convert to fraction form
    326,461.10/489,680.22 = 134,328.59/x
  3. Step 3: Cross multiply
    326,461.10x = 489,680.22 × 134,328.59
  4. Step 4: Simplify right side
    326,461.10x = 65,778,053,503.49
  5. Step 5: Solve for x
    x = 65,778,053,503.49/326,461.10
  6. Step 6: Final answer
    x = 201,488.18

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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.