Home / 391,900,943.77-540,813,348.75-213,277,239.25

Finding the Fourth Proportional to 391,900,943.77, 540,813,348.75 and 213,277,239.25

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Solution

The fourth proportional to 391,900,943.77, 540,813,348.75 and 213,277,239.25 is: 294,317,173.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,900,943.77 : 540,813,348.75 = 213,277,239.25 : x
  2. Step 2: Convert to fraction form
    391,900,943.77/540,813,348.75 = 213,277,239.25/x
  3. Step 3: Cross multiply
    391,900,943.77x = 540,813,348.75 × 213,277,239.25
  4. Step 4: Simplify right side
    391,900,943.77x = 115,343,177,970,947,440
  5. Step 5: Solve for x
    x = 115,343,177,970,947,440/391,900,943.77
  6. Step 6: Final answer
    x = 294,317,173.27

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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.