Home / 390,677,351.45-539,114,946.09-231,914,260.70

Finding the Fourth Proportional to 390,677,351.45, 539,114,946.09 and 231,914,260.70

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Solution

The fourth proportional to 390,677,351.45, 539,114,946.09 and 231,914,260.70 is: 320,029,926.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,677,351.45 : 539,114,946.09 = 231,914,260.70 : x
  2. Step 2: Convert to fraction form
    390,677,351.45/539,114,946.09 = 231,914,260.70/x
  3. Step 3: Cross multiply
    390,677,351.45x = 539,114,946.09 × 231,914,260.70
  4. Step 4: Simplify right side
    390,677,351.45x = 125,028,444,152,087,136
  5. Step 5: Solve for x
    x = 125,028,444,152,087,136/390,677,351.45
  6. Step 6: Final answer
    x = 320,029,926.71

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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.