Home / 385,068.28-531,231.48-257,784.88

Finding the Fourth Proportional to 385,068.28, 531,231.48 and 257,784.88

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Solution

The fourth proportional to 385,068.28, 531,231.48 and 257,784.88 is: 355,634.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,068.28 : 531,231.48 = 257,784.88 : x
  2. Step 2: Convert to fraction form
    385,068.28/531,231.48 = 257,784.88/x
  3. Step 3: Cross multiply
    385,068.28x = 531,231.48 × 257,784.88
  4. Step 4: Simplify right side
    385,068.28x = 136,943,443,324.02
  5. Step 5: Solve for x
    x = 136,943,443,324.02/385,068.28
  6. Step 6: Final answer
    x = 355,634.18

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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.