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Finding the Fourth Proportional to 321,653.40, 482,480.10 and 197,237.40

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Solution

The fourth proportional to 321,653.40, 482,480.10 and 197,237.40 is: 295,856.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,653.40 : 482,480.10 = 197,237.40 : x
  2. Step 2: Convert to fraction form
    321,653.40/482,480.10 = 197,237.40/x
  3. Step 3: Cross multiply
    321,653.40x = 482,480.10 × 197,237.40
  4. Step 4: Simplify right side
    321,653.40x = 95,163,120,475.74
  5. Step 5: Solve for x
    x = 95,163,120,475.74/321,653.40
  6. Step 6: Final answer
    x = 295,856.10

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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.