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Finding the Fourth Proportional to 312,373.02, 468,605.33 and 99,069.80

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Solution

The fourth proportional to 312,373.02, 468,605.33 and 99,069.80 is: 148,619.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,373.02 : 468,605.33 = 99,069.80 : x
  2. Step 2: Convert to fraction form
    312,373.02/468,605.33 = 99,069.80/x
  3. Step 3: Cross multiply
    312,373.02x = 468,605.33 × 99,069.80
  4. Step 4: Simplify right side
    312,373.02x = 46,424,636,322.03
  5. Step 5: Solve for x
    x = 46,424,636,322.03/312,373.02
  6. Step 6: Final answer
    x = 148,619.23

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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.