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Finding the Fourth Proportional to 347,612.70, 520,933.05 and 276,656.70

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Solution

The fourth proportional to 347,612.70, 520,933.05 and 276,656.70 is: 414,598.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,612.70 : 520,933.05 = 276,656.70 : x
  2. Step 2: Convert to fraction form
    347,612.70/520,933.05 = 276,656.70/x
  3. Step 3: Cross multiply
    347,612.70x = 520,933.05 × 276,656.70
  4. Step 4: Simplify right side
    347,612.70x = 144,119,618,533.94
  5. Step 5: Solve for x
    x = 144,119,618,533.94/347,612.70
  6. Step 6: Final answer
    x = 414,598.25

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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.