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Finding the Fourth Proportional to 346,960.40, 520,440.60 and 197,661.20

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Solution

The fourth proportional to 346,960.40, 520,440.60 and 197,661.20 is: 296,491.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,960.40 : 520,440.60 = 197,661.20 : x
  2. Step 2: Convert to fraction form
    346,960.40/520,440.60 = 197,661.20/x
  3. Step 3: Cross multiply
    346,960.40x = 520,440.60 × 197,661.20
  4. Step 4: Simplify right side
    346,960.40x = 102,870,913,524.72
  5. Step 5: Solve for x
    x = 102,870,913,524.72/346,960.40
  6. Step 6: Final answer
    x = 296,491.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.