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Finding the Fourth Proportional to 389,044.21, 536,870.31 and 216,967.41

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Solution

The fourth proportional to 389,044.21, 536,870.31 and 216,967.41 is: 299,409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,044.21 : 536,870.31 = 216,967.41 : x
  2. Step 2: Convert to fraction form
    389,044.21/536,870.31 = 216,967.41/x
  3. Step 3: Cross multiply
    389,044.21x = 536,870.31 × 216,967.41
  4. Step 4: Simplify right side
    389,044.21x = 116,483,360,666.60
  5. Step 5: Solve for x
    x = 116,483,360,666.60/389,044.21
  6. Step 6: Final answer
    x = 299,409.06

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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.