Home / 354,519,498.69-489,318,537.51-207,889,021.89

Finding the Fourth Proportional to 354,519,498.69, 489,318,537.51 and 207,889,021.89

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Solution

The fourth proportional to 354,519,498.69, 489,318,537.51 and 207,889,021.89 is: 286,934,717.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,519,498.69 : 489,318,537.51 = 207,889,021.89 : x
  2. Step 2: Convert to fraction form
    354,519,498.69/489,318,537.51 = 207,889,021.89/x
  3. Step 3: Cross multiply
    354,519,498.69x = 489,318,537.51 × 207,889,021.89
  4. Step 4: Simplify right side
    354,519,498.69x = 101,723,952,155,599,168
  5. Step 5: Solve for x
    x = 101,723,952,155,599,168/354,519,498.69
  6. Step 6: Final answer
    x = 286,934,717.36

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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.