Home / 206,915,622.58-285,436,699.14-128,569,409.38

Finding the Fourth Proportional to 206,915,622.58, 285,436,699.14 and 128,569,409.38

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Solution

The fourth proportional to 206,915,622.58, 285,436,699.14 and 128,569,409.38 is: 177,359,386.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,915,622.58 : 285,436,699.14 = 128,569,409.38 : x
  2. Step 2: Convert to fraction form
    206,915,622.58/285,436,699.14 = 128,569,409.38/x
  3. Step 3: Cross multiply
    206,915,622.58x = 285,436,699.14 × 128,569,409.38
  4. Step 4: Simplify right side
    206,915,622.58x = 36,698,427,823,806,552
  5. Step 5: Solve for x
    x = 36,698,427,823,806,552/206,915,622.58
  6. Step 6: Final answer
    x = 177,359,386.24

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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.