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Finding the Fourth Proportional to 368,418.06, 508,375.71 and 207,328.50

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Solution

The fourth proportional to 368,418.06, 508,375.71 and 207,328.50 is: 286,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,418.06 : 508,375.71 = 207,328.50 : x
  2. Step 2: Convert to fraction form
    368,418.06/508,375.71 = 207,328.50/x
  3. Step 3: Cross multiply
    368,418.06x = 508,375.71 × 207,328.50
  4. Step 4: Simplify right side
    368,418.06x = 105,400,773,390.74
  5. Step 5: Solve for x
    x = 105,400,773,390.74/368,418.06
  6. Step 6: Final answer
    x = 286,090.14

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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.