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Finding the Fourth Proportional to 310,100.40, 465,280.20 and 99,802.80

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Solution

The fourth proportional to 310,100.40, 465,280.20 and 99,802.80 is: 149,745.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,100.40 : 465,280.20 = 99,802.80 : x
  2. Step 2: Convert to fraction form
    310,100.40/465,280.20 = 99,802.80/x
  3. Step 3: Cross multiply
    310,100.40x = 465,280.20 × 99,802.80
  4. Step 4: Simplify right side
    310,100.40x = 46,436,266,744.56
  5. Step 5: Solve for x
    x = 46,436,266,744.56/310,100.40
  6. Step 6: Final answer
    x = 149,745.91

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1.5x scale

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.