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Finding the Fourth Proportional to 421,594.48, 581,785.78 and 240,364.78

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Solution

The fourth proportional to 421,594.48, 581,785.78 and 240,364.78 is: 331,695.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,594.48 : 581,785.78 = 240,364.78 : x
  2. Step 2: Convert to fraction form
    421,594.48/581,785.78 = 240,364.78/x
  3. Step 3: Cross multiply
    421,594.48x = 581,785.78 × 240,364.78
  4. Step 4: Simplify right side
    421,594.48x = 139,840,811,016.83
  5. Step 5: Solve for x
    x = 139,840,811,016.83/421,594.48
  6. Step 6: Final answer
    x = 331,695.07

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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.