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Finding the Fourth Proportional to 356,788,900.90, 492,372,041.07 and 200,159,369.88

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Solution

The fourth proportional to 356,788,900.90, 492,372,041.07 and 200,159,369.88 is: 276,221,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,788,900.90 : 492,372,041.07 = 200,159,369.88 : x
  2. Step 2: Convert to fraction form
    356,788,900.90/492,372,041.07 = 200,159,369.88/x
  3. Step 3: Cross multiply
    356,788,900.90x = 492,372,041.07 × 200,159,369.88
  4. Step 4: Simplify right side
    356,788,900.90x = 98,552,877,488,778,928
  5. Step 5: Solve for x
    x = 98,552,877,488,778,928/356,788,900.90
  6. Step 6: Final answer
    x = 276,221,814.19

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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.