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Finding the Fourth Proportional to 346,502.70, 519,754.05 and 253,190.70

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Solution

The fourth proportional to 346,502.70, 519,754.05 and 253,190.70 is: 379,786.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,502.70 : 519,754.05 = 253,190.70 : x
  2. Step 2: Convert to fraction form
    346,502.70/519,754.05 = 253,190.70/x
  3. Step 3: Cross multiply
    346,502.70x = 519,754.05 × 253,190.70
  4. Step 4: Simplify right side
    346,502.70x = 131,596,891,747.34
  5. Step 5: Solve for x
    x = 131,596,891,747.34/346,502.70
  6. Step 6: Final answer
    x = 379,786.05

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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.