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Finding the Fourth Proportional to 331,390.20, 497,085.30 and 191,033.40

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Solution

The fourth proportional to 331,390.20, 497,085.30 and 191,033.40 is: 286,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,390.20 : 497,085.30 = 191,033.40 : x
  2. Step 2: Convert to fraction form
    331,390.20/497,085.30 = 191,033.40/x
  3. Step 3: Cross multiply
    331,390.20x = 497,085.30 × 191,033.40
  4. Step 4: Simplify right side
    331,390.20x = 94,959,894,949.02
  5. Step 5: Solve for x
    x = 94,959,894,949.02/331,390.20
  6. Step 6: Final answer
    x = 286,550.10

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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.