Home / 379,135,291.71-523,207,411.48-211,871,553.11

Finding the Fourth Proportional to 379,135,291.71, 523,207,411.48 and 211,871,553.11

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Solution

The fourth proportional to 379,135,291.71, 523,207,411.48 and 211,871,553.11 is: 292,383,139.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,135,291.71 : 523,207,411.48 = 211,871,553.11 : x
  2. Step 2: Convert to fraction form
    379,135,291.71/523,207,411.48 = 211,871,553.11/x
  3. Step 3: Cross multiply
    379,135,291.71x = 523,207,411.48 × 211,871,553.11
  4. Step 4: Simplify right side
    379,135,291.71x = 110,852,766,870,609,952
  5. Step 5: Solve for x
    x = 110,852,766,870,609,952/379,135,291.71
  6. Step 6: Final answer
    x = 292,383,139.46

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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.