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Finding the Fourth Proportional to 329,815.40, 455,155.40 and 186,572.57

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Solution

The fourth proportional to 329,815.40, 455,155.40 and 186,572.57 is: 257,475.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,815.40 : 455,155.40 = 186,572.57 : x
  2. Step 2: Convert to fraction form
    329,815.40/455,155.40 = 186,572.57/x
  3. Step 3: Cross multiply
    329,815.40x = 455,155.40 × 186,572.57
  4. Step 4: Simplify right side
    329,815.40x = 84,919,510,918.03
  5. Step 5: Solve for x
    x = 84,919,510,918.03/329,815.40
  6. Step 6: Final answer
    x = 257,475.89

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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.