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Finding the Fourth Proportional to 368,403.88, 508,376.50 and 207,265.72

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Solution

The fourth proportional to 368,403.88, 508,376.50 and 207,265.72 is: 286,014.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,403.88 : 508,376.50 = 207,265.72 : x
  2. Step 2: Convert to fraction form
    368,403.88/508,376.50 = 207,265.72/x
  3. Step 3: Cross multiply
    368,403.88x = 508,376.50 × 207,265.72
  4. Step 4: Simplify right side
    368,403.88x = 105,369,021,303.58
  5. Step 5: Solve for x
    x = 105,369,021,303.58/368,403.88
  6. Step 6: Final answer
    x = 286,014.96

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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.