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Finding the Fourth Proportional to 421,632.55, 631,435.41 and 241,170.91

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Solution

The fourth proportional to 421,632.55, 631,435.41 and 241,170.91 is: 361,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,632.55 : 631,435.41 = 241,170.91 : x
  2. Step 2: Convert to fraction form
    421,632.55/631,435.41 = 241,170.91/x
  3. Step 3: Cross multiply
    421,632.55x = 631,435.41 × 241,170.91
  4. Step 4: Simplify right side
    421,632.55x = 152,283,852,435.92
  5. Step 5: Solve for x
    x = 152,283,852,435.92/421,632.55
  6. Step 6: Final answer
    x = 361,176.70

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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.