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Finding the Fourth Proportional to 312,013.40, 468,090.21 and 98,794.07

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Solution

The fourth proportional to 312,013.40, 468,090.21 and 98,794.07 is: 148,213.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,013.40 : 468,090.21 = 98,794.07 : x
  2. Step 2: Convert to fraction form
    312,013.40/468,090.21 = 98,794.07/x
  3. Step 3: Cross multiply
    312,013.40x = 468,090.21 × 98,794.07
  4. Step 4: Simplify right side
    312,013.40x = 46,244,534,632.60
  5. Step 5: Solve for x
    x = 46,244,534,632.60/312,013.40
  6. Step 6: Final answer
    x = 148,213.30

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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.