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Finding the Fourth Proportional to 389,802.43, 537,927.36 and 210,954.43

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Solution

The fourth proportional to 389,802.43, 537,927.36 and 210,954.43 is: 291,117.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,802.43 : 537,927.36 = 210,954.43 : x
  2. Step 2: Convert to fraction form
    389,802.43/537,927.36 = 210,954.43/x
  3. Step 3: Cross multiply
    389,802.43x = 537,927.36 × 210,954.43
  4. Step 4: Simplify right side
    389,802.43x = 113,478,159,610.21
  5. Step 5: Solve for x
    x = 113,478,159,610.21/389,802.43
  6. Step 6: Final answer
    x = 291,117.12

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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.