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Finding the Fourth Proportional to 458,650.40, 687,392.40 and 221,482.40

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Solution

The fourth proportional to 458,650.40, 687,392.40 and 221,482.40 is: 331,941.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,650.40 : 687,392.40 = 221,482.40 : x
  2. Step 2: Convert to fraction form
    458,650.40/687,392.40 = 221,482.40/x
  3. Step 3: Cross multiply
    458,650.40x = 687,392.40 × 221,482.40
  4. Step 4: Simplify right side
    458,650.40x = 152,245,318,493.76
  5. Step 5: Solve for x
    x = 152,245,318,493.76/458,650.40
  6. Step 6: Final answer
    x = 331,941.97

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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.