Home / 399,450,718.31-551,259,015.42-223,238,708.48

Finding the Fourth Proportional to 399,450,718.31, 551,259,015.42 and 223,238,708.48

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Solution

The fourth proportional to 399,450,718.31, 551,259,015.42 and 223,238,708.48 is: 308,078,931.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,450,718.31 : 551,259,015.42 = 223,238,708.48 : x
  2. Step 2: Convert to fraction form
    399,450,718.31/551,259,015.42 = 223,238,708.48/x
  3. Step 3: Cross multiply
    399,450,718.31x = 551,259,015.42 × 223,238,708.48
  4. Step 4: Simplify right side
    399,450,718.31x = 123,062,350,640,317,184
  5. Step 5: Solve for x
    x = 123,062,350,640,317,184/399,450,718.31
  6. Step 6: Final answer
    x = 308,078,931.89

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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.