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Finding the Fourth Proportional to 247,045.54, 340,913.94 and 139,613.20

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Solution

The fourth proportional to 247,045.54, 340,913.94 and 139,613.20 is: 192,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,045.54 : 340,913.94 = 139,613.20 : x
  2. Step 2: Convert to fraction form
    247,045.54/340,913.94 = 139,613.20/x
  3. Step 3: Cross multiply
    247,045.54x = 340,913.94 × 139,613.20
  4. Step 4: Simplify right side
    247,045.54x = 47,596,086,088.01
  5. Step 5: Solve for x
    x = 47,596,086,088.01/247,045.54
  6. Step 6: Final answer
    x = 192,661.18

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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.