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Finding the Fourth Proportional to 293,497.91, 440,143.17 and 139,605.78

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Solution

The fourth proportional to 293,497.91, 440,143.17 and 139,605.78 is: 209,359.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    293,497.91 : 440,143.17 = 139,605.78 : x
  2. Step 2: Convert to fraction form
    293,497.91/440,143.17 = 139,605.78/x
  3. Step 3: Cross multiply
    293,497.91x = 440,143.17 × 139,605.78
  4. Step 4: Simplify right side
    293,497.91x = 61,446,529,210.73
  5. Step 5: Solve for x
    x = 61,446,529,210.73/293,497.91
  6. Step 6: Final answer
    x = 209,359.34

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1.5x scale

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.