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Finding the Fourth Proportional to 330,278.57, 455,795.15 and 187,035.53

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Solution

The fourth proportional to 330,278.57, 455,795.15 and 187,035.53 is: 258,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,278.57 : 455,795.15 = 187,035.53 : x
  2. Step 2: Convert to fraction form
    330,278.57/455,795.15 = 187,035.53/x
  3. Step 3: Cross multiply
    330,278.57x = 455,795.15 × 187,035.53
  4. Step 4: Simplify right side
    330,278.57x = 85,249,884,237.53
  5. Step 5: Solve for x
    x = 85,249,884,237.53/330,278.57
  6. Step 6: Final answer
    x = 258,115.10

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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.