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Finding the Fourth Proportional to 488,798,732.40, 734,048,404.20 and 259,216,220.40

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Solution

The fourth proportional to 488,798,732.40, 734,048,404.20 and 259,216,220.40 is: 389,275,258.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,798,732.40 : 734,048,404.20 = 259,216,220.40 : x
  2. Step 2: Convert to fraction form
    488,798,732.40/734,048,404.20 = 259,216,220.40/x
  3. Step 3: Cross multiply
    488,798,732.40x = 734,048,404.20 × 259,216,220.40
  4. Step 4: Simplify right side
    488,798,732.40x = 190,277,252,927,375,488
  5. Step 5: Solve for x
    x = 190,277,252,927,375,488/488,798,732.40
  6. Step 6: Final answer
    x = 389,275,258.54

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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.