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Finding the Fourth Proportional to 348,000.40, 521,579.40 and 147,900.70

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Solution

The fourth proportional to 348,000.40, 521,579.40 and 147,900.70 is: 221,672.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,000.40 : 521,579.40 = 147,900.70 : x
  2. Step 2: Convert to fraction form
    348,000.40/521,579.40 = 147,900.70/x
  3. Step 3: Cross multiply
    348,000.40x = 521,579.40 × 147,900.70
  4. Step 4: Simplify right side
    348,000.40x = 77,141,958,365.58
  5. Step 5: Solve for x
    x = 77,141,958,365.58/348,000.40
  6. Step 6: Final answer
    x = 221,672.04

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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.