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Finding the Fourth Proportional to 375,624,406.58, 518,359,771.59 and 208,358,936.12

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Solution

The fourth proportional to 375,624,406.58, 518,359,771.59 and 208,358,936.12 is: 287,534,272.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,624,406.58 : 518,359,771.59 = 208,358,936.12 : x
  2. Step 2: Convert to fraction form
    375,624,406.58/518,359,771.59 = 208,358,936.12/x
  3. Step 3: Cross multiply
    375,624,406.58x = 518,359,771.59 × 208,358,936.12
  4. Step 4: Simplify right side
    375,624,406.58x = 108,004,890,533,306,800
  5. Step 5: Solve for x
    x = 108,004,890,533,306,800/375,624,406.58
  6. Step 6: Final answer
    x = 287,534,272.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.