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Finding the Fourth Proportional to 389,492.12, 537,496.08 and 210,644.12

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Solution

The fourth proportional to 389,492.12, 537,496.08 and 210,644.12 is: 290,687.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,492.12 : 537,496.08 = 210,644.12 : x
  2. Step 2: Convert to fraction form
    389,492.12/537,496.08 = 210,644.12/x
  3. Step 3: Cross multiply
    389,492.12x = 537,496.08 × 210,644.12
  4. Step 4: Simplify right side
    389,492.12x = 113,220,388,775.05
  5. Step 5: Solve for x
    x = 113,220,388,775.05/389,492.12
  6. Step 6: Final answer
    x = 290,687.24

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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.