Home / 309,835.71-427,581.77-173,877.98

Finding the Fourth Proportional to 309,835.71, 427,581.77 and 173,877.98

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Solution

The fourth proportional to 309,835.71, 427,581.77 and 173,877.98 is: 239,956.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,835.71 : 427,581.77 = 173,877.98 : x
  2. Step 2: Convert to fraction form
    309,835.71/427,581.77 = 173,877.98/x
  3. Step 3: Cross multiply
    309,835.71x = 427,581.77 × 173,877.98
  4. Step 4: Simplify right side
    309,835.71x = 74,347,051,445.13
  5. Step 5: Solve for x
    x = 74,347,051,445.13/309,835.71
  6. Step 6: Final answer
    x = 239,956.37

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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.