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Finding the Fourth Proportional to 647,668.50, 971,508.90 and 248,214.30

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Solution

The fourth proportional to 647,668.50, 971,508.90 and 248,214.30 is: 372,323.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,668.50 : 971,508.90 = 248,214.30 : x
  2. Step 2: Convert to fraction form
    647,668.50/971,508.90 = 248,214.30/x
  3. Step 3: Cross multiply
    647,668.50x = 971,508.90 × 248,214.30
  4. Step 4: Simplify right side
    647,668.50x = 241,142,401,557.27
  5. Step 5: Solve for x
    x = 241,142,401,557.27/647,668.50
  6. Step 6: Final answer
    x = 372,323.81

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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.