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Finding the Fourth Proportional to 373,463.51, 515,423.19 and 212,342.69

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Solution

The fourth proportional to 373,463.51, 515,423.19 and 212,342.69 is: 293,057.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,463.51 : 515,423.19 = 212,342.69 : x
  2. Step 2: Convert to fraction form
    373,463.51/515,423.19 = 212,342.69/x
  3. Step 3: Cross multiply
    373,463.51x = 515,423.19 × 212,342.69
  4. Step 4: Simplify right side
    373,463.51x = 109,446,344,075.87
  5. Step 5: Solve for x
    x = 109,446,344,075.87/373,463.51
  6. Step 6: Final answer
    x = 293,057.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.