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Finding the Fourth Proportional to 368,393.76, 508,354.24 and 207,216.72

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Solution

The fourth proportional to 368,393.76, 508,354.24 and 207,216.72 is: 285,942.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,393.76 : 508,354.24 = 207,216.72 : x
  2. Step 2: Convert to fraction form
    368,393.76/508,354.24 = 207,216.72/x
  3. Step 3: Cross multiply
    368,393.76x = 508,354.24 × 207,216.72
  4. Step 4: Simplify right side
    368,393.76x = 105,339,498,210.89
  5. Step 5: Solve for x
    x = 105,339,498,210.89/368,393.76
  6. Step 6: Final answer
    x = 285,942.68

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1.5x scale

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.