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Finding the Fourth Proportional to 310,340.10, 465,740.55 and 123,485.70

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Solution

The fourth proportional to 310,340.10, 465,740.55 and 123,485.70 is: 185,320.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,340.10 : 465,740.55 = 123,485.70 : x
  2. Step 2: Convert to fraction form
    310,340.10/465,740.55 = 123,485.70/x
  3. Step 3: Cross multiply
    310,340.10x = 465,740.55 × 123,485.70
  4. Step 4: Simplify right side
    310,340.10x = 57,512,297,835.14
  5. Step 5: Solve for x
    x = 57,512,297,835.14/310,340.10
  6. Step 6: Final answer
    x = 185,320.23

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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.