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Finding the Fourth Proportional to 266,117,038.40, 399,175,557.60 and 262,533,857.60

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Solution

The fourth proportional to 266,117,038.40, 399,175,557.60 and 262,533,857.60 is: 393,800,786.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,117,038.40 : 399,175,557.60 = 262,533,857.60 : x
  2. Step 2: Convert to fraction form
    266,117,038.40/399,175,557.60 = 262,533,857.60/x
  3. Step 3: Cross multiply
    266,117,038.40x = 399,175,557.60 × 262,533,857.60
  4. Step 4: Simplify right side
    266,117,038.40x = 104,797,098,996,359,008
  5. Step 5: Solve for x
    x = 104,797,098,996,359,008/266,117,038.40
  6. Step 6: Final answer
    x = 393,800,786.40

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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.