Home / 328,905.78-493,272.27-141,875.70

Finding the Fourth Proportional to 328,905.78, 493,272.27 and 141,875.70

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Solution

The fourth proportional to 328,905.78, 493,272.27 and 141,875.70 is: 212,776.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,905.78 : 493,272.27 = 141,875.70 : x
  2. Step 2: Convert to fraction form
    328,905.78/493,272.27 = 141,875.70/x
  3. Step 3: Cross multiply
    328,905.78x = 493,272.27 × 141,875.70
  4. Step 4: Simplify right side
    328,905.78x = 69,983,348,596.84
  5. Step 5: Solve for x
    x = 69,983,348,596.84/328,905.78
  6. Step 6: Final answer
    x = 212,776.28

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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.