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Finding the Fourth Proportional to 262,656,401.40, 393,984,602.10 and 259,073,220.60

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Solution

The fourth proportional to 262,656,401.40, 393,984,602.10 and 259,073,220.60 is: 388,609,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,656,401.40 : 393,984,602.10 = 259,073,220.60 : x
  2. Step 2: Convert to fraction form
    262,656,401.40/393,984,602.10 = 259,073,220.60/x
  3. Step 3: Cross multiply
    262,656,401.40x = 393,984,602.10 × 259,073,220.60
  4. Step 4: Simplify right side
    262,656,401.40x = 102,070,859,732,856,528
  5. Step 5: Solve for x
    x = 102,070,859,732,856,528/262,656,401.40
  6. Step 6: Final answer
    x = 388,609,830.90

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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.