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Finding the Fourth Proportional to 331,392.48, 497,130.72 and 326,263.20

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Solution

The fourth proportional to 331,392.48, 497,130.72 and 326,263.20 is: 489,436.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,392.48 : 497,130.72 = 326,263.20 : x
  2. Step 2: Convert to fraction form
    331,392.48/497,130.72 = 326,263.20/x
  3. Step 3: Cross multiply
    331,392.48x = 497,130.72 × 326,263.20
  4. Step 4: Simplify right side
    331,392.48x = 162,195,459,525.50
  5. Step 5: Solve for x
    x = 162,195,459,525.50/331,392.48
  6. Step 6: Final answer
    x = 489,436.15

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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.