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Finding the Fourth Proportional to 348,017.92, 480,310.40 and 197,120

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Solution

The fourth proportional to 348,017.92, 480,310.40 and 197,120 is: 272,051.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,017.92 : 480,310.40 = 197,120 : x
  2. Step 2: Convert to fraction form
    348,017.92/480,310.40 = 197,120/x
  3. Step 3: Cross multiply
    348,017.92x = 480,310.40 × 197,120
  4. Step 4: Simplify right side
    348,017.92x = 94,678,786,048
  5. Step 5: Solve for x
    x = 94,678,786,048/348,017.92
  6. Step 6: Final answer
    x = 272,051.47

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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.