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Finding the Fourth Proportional to 368,477.02, 508,508.22 and 207,337.78

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Solution

The fourth proportional to 368,477.02, 508,508.22 and 207,337.78 is: 286,131.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,477.02 : 508,508.22 = 207,337.78 : x
  2. Step 2: Convert to fraction form
    368,477.02/508,508.22 = 207,337.78/x
  3. Step 3: Cross multiply
    368,477.02x = 508,508.22 × 207,337.78
  4. Step 4: Simplify right side
    368,477.02x = 105,432,965,446.55
  5. Step 5: Solve for x
    x = 105,432,965,446.55/368,477.02
  6. Step 6: Final answer
    x = 286,131.73

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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.