Home / 257,200.02-355,029.18-209,370.32

Finding the Fourth Proportional to 257,200.02, 355,029.18 and 209,370.32

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Solution

The fourth proportional to 257,200.02, 355,029.18 and 209,370.32 is: 289,006.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,200.02 : 355,029.18 = 209,370.32 : x
  2. Step 2: Convert to fraction form
    257,200.02/355,029.18 = 209,370.32/x
  3. Step 3: Cross multiply
    257,200.02x = 355,029.18 × 209,370.32
  4. Step 4: Simplify right side
    257,200.02x = 74,332,573,025.94
  5. Step 5: Solve for x
    x = 74,332,573,025.94/257,200.02
  6. Step 6: Final answer
    x = 289,006.87

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1.5x scale

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.