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Finding the Fourth Proportional to 340,552.68, 469,929.06 and 189,663.72

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Solution

The fourth proportional to 340,552.68, 469,929.06 and 189,663.72 is: 261,717.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,552.68 : 469,929.06 = 189,663.72 : x
  2. Step 2: Convert to fraction form
    340,552.68/469,929.06 = 189,663.72/x
  3. Step 3: Cross multiply
    340,552.68x = 469,929.06 × 189,663.72
  4. Step 4: Simplify right side
    340,552.68x = 89,128,493,655.70
  5. Step 5: Solve for x
    x = 89,128,493,655.70/340,552.68
  6. Step 6: Final answer
    x = 261,717.20

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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.