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Finding the Fourth Proportional to 389,812.04, 537,940.68 and 210,964.04

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Solution

The fourth proportional to 389,812.04, 537,940.68 and 210,964.04 is: 291,130.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,812.04 : 537,940.68 = 210,964.04 : x
  2. Step 2: Convert to fraction form
    389,812.04/537,940.68 = 210,964.04/x
  3. Step 3: Cross multiply
    389,812.04x = 537,940.68 × 210,964.04
  4. Step 4: Simplify right side
    389,812.04x = 113,486,139,133.15
  5. Step 5: Solve for x
    x = 113,486,139,133.15/389,812.04
  6. Step 6: Final answer
    x = 291,130.41

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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.