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Finding the Fourth Proportional to 389,209.52, 537,108.90 and 210,361.52

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Solution

The fourth proportional to 389,209.52, 537,108.90 and 210,361.52 is: 290,298.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,209.52 : 537,108.90 = 210,361.52 : x
  2. Step 2: Convert to fraction form
    389,209.52/537,108.90 = 210,361.52/x
  3. Step 3: Cross multiply
    389,209.52x = 537,108.90 × 210,361.52
  4. Step 4: Simplify right side
    389,209.52x = 112,987,044,609.53
  5. Step 5: Solve for x
    x = 112,987,044,609.53/389,209.52
  6. Step 6: Final answer
    x = 290,298.77

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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.