Home / 309,719.16-427,371.51-173,747.89

Finding the Fourth Proportional to 309,719.16, 427,371.51 and 173,747.89

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Solution

The fourth proportional to 309,719.16, 427,371.51 and 173,747.89 is: 239,749.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,719.16 : 427,371.51 = 173,747.89 : x
  2. Step 2: Convert to fraction form
    309,719.16/427,371.51 = 173,747.89/x
  3. Step 3: Cross multiply
    309,719.16x = 427,371.51 × 173,747.89
  4. Step 4: Simplify right side
    309,719.16x = 74,254,898,108.61
  5. Step 5: Solve for x
    x = 74,254,898,108.61/309,719.16
  6. Step 6: Final answer
    x = 239,749.13

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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.