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Finding the Fourth Proportional to 312,405.26, 468,510.86 and 112,699.67

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Solution

The fourth proportional to 312,405.26, 468,510.86 and 112,699.67 is: 169,014.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,405.26 : 468,510.86 = 112,699.67 : x
  2. Step 2: Convert to fraction form
    312,405.26/468,510.86 = 112,699.67/x
  3. Step 3: Cross multiply
    312,405.26x = 468,510.86 × 112,699.67
  4. Step 4: Simplify right side
    312,405.26x = 52,801,017,252.61
  5. Step 5: Solve for x
    x = 52,801,017,252.61/312,405.26
  6. Step 6: Final answer
    x = 169,014.50

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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.