Home / 458,336.20-687,677.10-221,888.20

Finding the Fourth Proportional to 458,336.20, 687,677.10 and 221,888.20

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Solution

The fourth proportional to 458,336.20, 687,677.10 and 221,888.20 is: 332,915.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,336.20 : 687,677.10 = 221,888.20 : x
  2. Step 2: Convert to fraction form
    458,336.20/687,677.10 = 221,888.20/x
  3. Step 3: Cross multiply
    458,336.20x = 687,677.10 × 221,888.20
  4. Step 4: Simplify right side
    458,336.20x = 152,587,433,900.22
  5. Step 5: Solve for x
    x = 152,587,433,900.22/458,336.20
  6. Step 6: Final answer
    x = 332,915.96

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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.