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Finding the Fourth Proportional to 347,047.20, 520,084.80 and 276,091.20

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Solution

The fourth proportional to 347,047.20, 520,084.80 and 276,091.20 is: 413,750.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,047.20 : 520,084.80 = 276,091.20 : x
  2. Step 2: Convert to fraction form
    347,047.20/520,084.80 = 276,091.20/x
  3. Step 3: Cross multiply
    347,047.20x = 520,084.80 × 276,091.20
  4. Step 4: Simplify right side
    347,047.20x = 143,590,836,533.76
  5. Step 5: Solve for x
    x = 143,590,836,533.76/347,047.20
  6. Step 6: Final answer
    x = 413,750.17

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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.