Home / 257,487.75-355,354.02-142,777.80

Finding the Fourth Proportional to 257,487.75, 355,354.02 and 142,777.80

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Solution

The fourth proportional to 257,487.75, 355,354.02 and 142,777.80 is: 197,044.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,487.75 : 355,354.02 = 142,777.80 : x
  2. Step 2: Convert to fraction form
    257,487.75/355,354.02 = 142,777.80/x
  3. Step 3: Cross multiply
    257,487.75x = 355,354.02 × 142,777.80
  4. Step 4: Simplify right side
    257,487.75x = 50,736,665,196.76
  5. Step 5: Solve for x
    x = 50,736,665,196.76/257,487.75
  6. Step 6: Final answer
    x = 197,044.97

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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.