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Finding the Fourth Proportional to 607,564.79, 911,476.37 and 208,098.31

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Solution

The fourth proportional to 607,564.79, 911,476.37 and 208,098.31 is: 312,191.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,564.79 : 911,476.37 = 208,098.31 : x
  2. Step 2: Convert to fraction form
    607,564.79/911,476.37 = 208,098.31/x
  3. Step 3: Cross multiply
    607,564.79x = 911,476.37 × 208,098.31
  4. Step 4: Simplify right side
    607,564.79x = 189,676,688,882.75
  5. Step 5: Solve for x
    x = 189,676,688,882.75/607,564.79
  6. Step 6: Final answer
    x = 312,191.71

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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.