Home / 257,820.40-385,637.10-231,357.70

Finding the Fourth Proportional to 257,820.40, 385,637.10 and 231,357.70

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Solution

The fourth proportional to 257,820.40, 385,637.10 and 231,357.70 is: 346,055.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,820.40 : 385,637.10 = 231,357.70 : x
  2. Step 2: Convert to fraction form
    257,820.40/385,637.10 = 231,357.70/x
  3. Step 3: Cross multiply
    257,820.40x = 385,637.10 × 231,357.70
  4. Step 4: Simplify right side
    257,820.40x = 89,220,112,490.67
  5. Step 5: Solve for x
    x = 89,220,112,490.67/257,820.40
  6. Step 6: Final answer
    x = 346,055.29

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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.