Home / 318,488.34-439,528.36-197,668.54

Finding the Fourth Proportional to 318,488.34, 439,528.36 and 197,668.54

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Solution

The fourth proportional to 318,488.34, 439,528.36 and 197,668.54 is: 272,791.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,488.34 : 439,528.36 = 197,668.54 : x
  2. Step 2: Convert to fraction form
    318,488.34/439,528.36 = 197,668.54/x
  3. Step 3: Cross multiply
    318,488.34x = 439,528.36 × 197,668.54
  4. Step 4: Simplify right side
    318,488.34x = 86,880,929,209.79
  5. Step 5: Solve for x
    x = 86,880,929,209.79/318,488.34
  6. Step 6: Final answer
    x = 272,791.55

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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.