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Finding the Fourth Proportional to 607,191.78, 910,802.28 and 207,829.92

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Solution

The fourth proportional to 607,191.78, 910,802.28 and 207,829.92 is: 311,749.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,191.78 : 910,802.28 = 207,829.92 : x
  2. Step 2: Convert to fraction form
    607,191.78/910,802.28 = 207,829.92/x
  3. Step 3: Cross multiply
    607,191.78x = 910,802.28 × 207,829.92
  4. Step 4: Simplify right side
    607,191.78x = 189,291,964,988.22
  5. Step 5: Solve for x
    x = 189,291,964,988.22/607,191.78
  6. Step 6: Final answer
    x = 311,749.88

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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.