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Finding the Fourth Proportional to 348,313.40, 522,703.11 and 126,697.40

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Solution

The fourth proportional to 348,313.40, 522,703.11 and 126,697.40 is: 190,130.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,313.40 : 522,703.11 = 126,697.40 : x
  2. Step 2: Convert to fraction form
    348,313.40/522,703.11 = 126,697.40/x
  3. Step 3: Cross multiply
    348,313.40x = 522,703.11 × 126,697.40
  4. Step 4: Simplify right side
    348,313.40x = 66,225,122,395.40
  5. Step 5: Solve for x
    x = 66,225,122,395.40/348,313.40
  6. Step 6: Final answer
    x = 190,130.85

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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.