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Finding the Fourth Proportional to 368,405.50, 508,397.63 and 207,261.57

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Solution

The fourth proportional to 368,405.50, 508,397.63 and 207,261.57 is: 286,019.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,405.50 : 508,397.63 = 207,261.57 : x
  2. Step 2: Convert to fraction form
    368,405.50/508,397.63 = 207,261.57/x
  3. Step 3: Cross multiply
    368,405.50x = 508,397.63 × 207,261.57
  4. Step 4: Simplify right side
    368,405.50x = 105,371,290,978.08
  5. Step 5: Solve for x
    x = 105,371,290,978.08/368,405.50
  6. Step 6: Final answer
    x = 286,019.86

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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.