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Finding the Fourth Proportional to 338,569.10, 508,019.88 and 136,157.03

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Solution

The fourth proportional to 338,569.10, 508,019.88 and 136,157.03 is: 204,302.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,569.10 : 508,019.88 = 136,157.03 : x
  2. Step 2: Convert to fraction form
    338,569.10/508,019.88 = 136,157.03/x
  3. Step 3: Cross multiply
    338,569.10x = 508,019.88 × 136,157.03
  4. Step 4: Simplify right side
    338,569.10x = 69,170,475,501.66
  5. Step 5: Solve for x
    x = 69,170,475,501.66/338,569.10
  6. Step 6: Final answer
    x = 204,302.39

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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.