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Finding the Fourth Proportional to 550,869.71, 760,215.28 and 309,167.27

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Solution

The fourth proportional to 550,869.71, 760,215.28 and 309,167.27 is: 426,659.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,869.71 : 760,215.28 = 309,167.27 : x
  2. Step 2: Convert to fraction form
    550,869.71/760,215.28 = 309,167.27/x
  3. Step 3: Cross multiply
    550,869.71x = 760,215.28 × 309,167.27
  4. Step 4: Simplify right side
    550,869.71x = 235,033,678,155.89
  5. Step 5: Solve for x
    x = 235,033,678,155.89/550,869.71
  6. Step 6: Final answer
    x = 426,659.29

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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.