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Finding the Fourth Proportional to 338,685.68, 508,047.96 and 102,003.68

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Solution

The fourth proportional to 338,685.68, 508,047.96 and 102,003.68 is: 153,011.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,685.68 : 508,047.96 = 102,003.68 : x
  2. Step 2: Convert to fraction form
    338,685.68/508,047.96 = 102,003.68/x
  3. Step 3: Cross multiply
    338,685.68x = 508,047.96 × 102,003.68
  4. Step 4: Simplify right side
    338,685.68x = 51,822,761,536.49
  5. Step 5: Solve for x
    x = 51,822,761,536.49/338,685.68
  6. Step 6: Final answer
    x = 153,011.37

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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.