Home / 379,139.48-523,365.14-258,402.80

Finding the Fourth Proportional to 379,139.48, 523,365.14 and 258,402.80

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Solution

The fourth proportional to 379,139.48, 523,365.14 and 258,402.80 is: 356,699.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,139.48 : 523,365.14 = 258,402.80 : x
  2. Step 2: Convert to fraction form
    379,139.48/523,365.14 = 258,402.80/x
  3. Step 3: Cross multiply
    379,139.48x = 523,365.14 × 258,402.80
  4. Step 4: Simplify right side
    379,139.48x = 135,239,017,598.39
  5. Step 5: Solve for x
    x = 135,239,017,598.39/379,139.48
  6. Step 6: Final answer
    x = 356,699.91

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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.