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Finding the Fourth Proportional to 326,401.34, 489,208.28 and 168,543.74

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Solution

The fourth proportional to 326,401.34, 489,208.28 and 168,543.74 is: 252,612.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,401.34 : 489,208.28 = 168,543.74 : x
  2. Step 2: Convert to fraction form
    326,401.34/489,208.28 = 168,543.74/x
  3. Step 3: Cross multiply
    326,401.34x = 489,208.28 × 168,543.74
  4. Step 4: Simplify right side
    326,401.34x = 82,452,991,125.49
  5. Step 5: Solve for x
    x = 82,452,991,125.49/326,401.34
  6. Step 6: Final answer
    x = 252,612.30

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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.