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Finding the Fourth Proportional to 312,651.02, 468,927.52 and 99,390.98

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Solution

The fourth proportional to 312,651.02, 468,927.52 and 99,390.98 is: 149,070.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,651.02 : 468,927.52 = 99,390.98 : x
  2. Step 2: Convert to fraction form
    312,651.02/468,927.52 = 99,390.98/x
  3. Step 3: Cross multiply
    312,651.02x = 468,927.52 × 99,390.98
  4. Step 4: Simplify right side
    312,651.02x = 46,607,163,168.65
  5. Step 5: Solve for x
    x = 46,607,163,168.65/312,651.02
  6. Step 6: Final answer
    x = 149,070.88

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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.