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Finding the Fourth Proportional to 368,781.66, 508,876.63 and 207,632.57

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Solution

The fourth proportional to 368,781.66, 508,876.63 and 207,632.57 is: 286,509.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,781.66 : 508,876.63 = 207,632.57 : x
  2. Step 2: Convert to fraction form
    368,781.66/508,876.63 = 207,632.57/x
  3. Step 3: Cross multiply
    368,781.66x = 508,876.63 × 207,632.57
  4. Step 4: Simplify right side
    368,781.66x = 105,659,359,436.38
  5. Step 5: Solve for x
    x = 105,659,359,436.38/368,781.66
  6. Step 6: Final answer
    x = 286,509.26

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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.