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Finding the Fourth Proportional to 338,740.02, 508,110.23 and 86,039.46

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Solution

The fourth proportional to 338,740.02, 508,110.23 and 86,039.46 is: 129,059.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,740.02 : 508,110.23 = 86,039.46 : x
  2. Step 2: Convert to fraction form
    338,740.02/508,110.23 = 86,039.46/x
  3. Step 3: Cross multiply
    338,740.02x = 508,110.23 × 86,039.46
  4. Step 4: Simplify right side
    338,740.02x = 43,717,529,809.68
  5. Step 5: Solve for x
    x = 43,717,529,809.68/338,740.02
  6. Step 6: Final answer
    x = 129,059.24

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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.