Home / 280,559.22-386,915.30-219,313.50

Finding the Fourth Proportional to 280,559.22, 386,915.30 and 219,313.50

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Solution

The fourth proportional to 280,559.22, 386,915.30 and 219,313.50 is: 302,452.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,559.22 : 386,915.30 = 219,313.50 : x
  2. Step 2: Convert to fraction form
    280,559.22/386,915.30 = 219,313.50/x
  3. Step 3: Cross multiply
    280,559.22x = 386,915.30 × 219,313.50
  4. Step 4: Simplify right side
    280,559.22x = 84,855,748,646.55
  5. Step 5: Solve for x
    x = 84,855,748,646.55/280,559.22
  6. Step 6: Final answer
    x = 302,452.18

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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.