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Finding the Fourth Proportional to 655,838.03, 983,663.61 and 206,547.21

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Solution

The fourth proportional to 655,838.03, 983,663.61 and 206,547.21 is: 309,791.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,838.03 : 983,663.61 = 206,547.21 : x
  2. Step 2: Convert to fraction form
    655,838.03/983,663.61 = 206,547.21/x
  3. Step 3: Cross multiply
    655,838.03x = 983,663.61 × 206,547.21
  4. Step 4: Simplify right side
    655,838.03x = 203,172,974,224.03
  5. Step 5: Solve for x
    x = 203,172,974,224.03/655,838.03
  6. Step 6: Final answer
    x = 309,791.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.