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Finding the Fourth Proportional to 243,055.47, 335,366.49 and 139,669.71

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Solution

The fourth proportional to 243,055.47, 335,366.49 and 139,669.71 is: 192,715.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,055.47 : 335,366.49 = 139,669.71 : x
  2. Step 2: Convert to fraction form
    243,055.47/335,366.49 = 139,669.71/x
  3. Step 3: Cross multiply
    243,055.47x = 335,366.49 × 139,669.71
  4. Step 4: Simplify right side
    243,055.47x = 46,840,540,402.02
  5. Step 5: Solve for x
    x = 46,840,540,402.02/243,055.47
  6. Step 6: Final answer
    x = 192,715.43

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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.