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Finding the Fourth Proportional to 313,732.88, 432,527.40 and 212,955.92

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Solution

The fourth proportional to 313,732.88, 432,527.40 and 212,955.92 is: 293,591.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,732.88 : 432,527.40 = 212,955.92 : x
  2. Step 2: Convert to fraction form
    313,732.88/432,527.40 = 212,955.92/x
  3. Step 3: Cross multiply
    313,732.88x = 432,527.40 × 212,955.92
  4. Step 4: Simplify right side
    313,732.88x = 92,109,270,392.21
  5. Step 5: Solve for x
    x = 92,109,270,392.21/313,732.88
  6. Step 6: Final answer
    x = 293,591.38

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1.5x scale

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.