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Finding the Fourth Proportional to 384,175.71, 530,191.58 and 212,126.45

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Solution

The fourth proportional to 384,175.71, 530,191.58 and 212,126.45 is: 292,750.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,175.71 : 530,191.58 = 212,126.45 : x
  2. Step 2: Convert to fraction form
    384,175.71/530,191.58 = 212,126.45/x
  3. Step 3: Cross multiply
    384,175.71x = 530,191.58 × 212,126.45
  4. Step 4: Simplify right side
    384,175.71x = 112,467,653,973.70
  5. Step 5: Solve for x
    x = 112,467,653,973.70/384,175.71
  6. Step 6: Final answer
    x = 292,750.56

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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.