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Finding the Fourth Proportional to 303,850.47, 418,957.89 and 207,111.58

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Solution

The fourth proportional to 303,850.47, 418,957.89 and 207,111.58 is: 285,571.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,850.47 : 418,957.89 = 207,111.58 : x
  2. Step 2: Convert to fraction form
    303,850.47/418,957.89 = 207,111.58/x
  3. Step 3: Cross multiply
    303,850.47x = 418,957.89 × 207,111.58
  4. Step 4: Simplify right side
    303,850.47x = 86,771,032,831.45
  5. Step 5: Solve for x
    x = 86,771,032,831.45/303,850.47
  6. Step 6: Final answer
    x = 285,571.50

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1.5x scale

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.