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Finding the Fourth Proportional to 546,898.90, 819,959.55 and 209,809.30

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Solution

The fourth proportional to 546,898.90, 819,959.55 and 209,809.30 is: 314,564.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    546,898.90 : 819,959.55 = 209,809.30 : x
  2. Step 2: Convert to fraction form
    546,898.90/819,959.55 = 209,809.30/x
  3. Step 3: Cross multiply
    546,898.90x = 819,959.55 × 209,809.30
  4. Step 4: Simplify right side
    546,898.90x = 172,035,139,213.82
  5. Step 5: Solve for x
    x = 172,035,139,213.82/546,898.90
  6. Step 6: Final answer
    x = 314,564.79

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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.