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Finding the Fourth Proportional to 340,521.10, 469,919.09 and 197,364.18

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Solution

The fourth proportional to 340,521.10, 469,919.09 and 197,364.18 is: 272,362.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,521.10 : 469,919.09 = 197,364.18 : x
  2. Step 2: Convert to fraction form
    340,521.10/469,919.09 = 197,364.18/x
  3. Step 3: Cross multiply
    340,521.10x = 469,919.09 × 197,364.18
  4. Step 4: Simplify right side
    340,521.10x = 92,745,196,357.61
  5. Step 5: Solve for x
    x = 92,745,196,357.61/340,521.10
  6. Step 6: Final answer
    x = 272,362.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.