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Finding the Fourth Proportional to 330,524.93, 455,956.53 and 215,870.69

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Solution

The fourth proportional to 330,524.93, 455,956.53 and 215,870.69 is: 297,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,524.93 : 455,956.53 = 215,870.69 : x
  2. Step 2: Convert to fraction form
    330,524.93/455,956.53 = 215,870.69/x
  3. Step 3: Cross multiply
    330,524.93x = 455,956.53 × 215,870.69
  4. Step 4: Simplify right side
    330,524.93x = 98,427,648,461.32
  5. Step 5: Solve for x
    x = 98,427,648,461.32/330,524.93
  6. Step 6: Final answer
    x = 297,791.91

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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.