Home / 243,212,828.18-335,657,707.67-138,806,519.81

Finding the Fourth Proportional to 243,212,828.18, 335,657,707.67 and 138,806,519.81

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Solution

The fourth proportional to 243,212,828.18, 335,657,707.67 and 138,806,519.81 is: 191,566,697.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,212,828.18 : 335,657,707.67 = 138,806,519.81 : x
  2. Step 2: Convert to fraction form
    243,212,828.18/335,657,707.67 = 138,806,519.81/x
  3. Step 3: Cross multiply
    243,212,828.18x = 335,657,707.67 × 138,806,519.81
  4. Step 4: Simplify right side
    243,212,828.18x = 46,591,478,246,963,680
  5. Step 5: Solve for x
    x = 46,591,478,246,963,680/243,212,828.18
  6. Step 6: Final answer
    x = 191,566,697.35

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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.