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Finding the Fourth Proportional to 286,141.20, 429,211.80 and 167,869.20

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Solution

The fourth proportional to 286,141.20, 429,211.80 and 167,869.20 is: 251,803.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,141.20 : 429,211.80 = 167,869.20 : x
  2. Step 2: Convert to fraction form
    286,141.20/429,211.80 = 167,869.20/x
  3. Step 3: Cross multiply
    286,141.20x = 429,211.80 × 167,869.20
  4. Step 4: Simplify right side
    286,141.20x = 72,051,441,496.56
  5. Step 5: Solve for x
    x = 72,051,441,496.56/286,141.20
  6. Step 6: Final answer
    x = 251,803.80

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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.