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Finding the Fourth Proportional to 340,521.60, 469,919.78 and 197,364.68

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Solution

The fourth proportional to 340,521.60, 469,919.78 and 197,364.68 is: 272,363.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,521.60 : 469,919.78 = 197,364.68 : x
  2. Step 2: Convert to fraction form
    340,521.60/469,919.78 = 197,364.68/x
  3. Step 3: Cross multiply
    340,521.60x = 469,919.78 × 197,364.68
  4. Step 4: Simplify right side
    340,521.60x = 92,745,567,005.37
  5. Step 5: Solve for x
    x = 92,745,567,005.37/340,521.60
  6. Step 6: Final answer
    x = 272,363.24

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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.