Home / 438,221,645.20-657,332,467.80-256,375,219.60

Finding the Fourth Proportional to 438,221,645.20, 657,332,467.80 and 256,375,219.60

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Solution

The fourth proportional to 438,221,645.20, 657,332,467.80 and 256,375,219.60 is: 384,562,829.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,221,645.20 : 657,332,467.80 = 256,375,219.60 : x
  2. Step 2: Convert to fraction form
    438,221,645.20/657,332,467.80 = 256,375,219.60/x
  3. Step 3: Cross multiply
    438,221,645.20x = 657,332,467.80 × 256,375,219.60
  4. Step 4: Simplify right side
    438,221,645.20x = 168,523,755,782,434,912
  5. Step 5: Solve for x
    x = 168,523,755,782,434,912/438,221,645.20
  6. Step 6: Final answer
    x = 384,562,829.40

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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.