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Finding the Fourth Proportional to 347,405.54, 521,150.35 and 122,720.00

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Solution

The fourth proportional to 347,405.54, 521,150.35 and 122,720.00 is: 184,094.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,405.54 : 521,150.35 = 122,720.00 : x
  2. Step 2: Convert to fraction form
    347,405.54/521,150.35 = 122,720.00/x
  3. Step 3: Cross multiply
    347,405.54x = 521,150.35 × 122,720.00
  4. Step 4: Simplify right side
    347,405.54x = 63,955,571,948.08
  5. Step 5: Solve for x
    x = 63,955,571,948.08/347,405.54
  6. Step 6: Final answer
    x = 184,094.85

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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.