Home / 257,562.12-355,435.71-142,858.32

Finding the Fourth Proportional to 257,562.12, 355,435.71 and 142,858.32

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Solution

The fourth proportional to 257,562.12, 355,435.71 and 142,858.32 is: 197,144.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,562.12 : 355,435.71 = 142,858.32 : x
  2. Step 2: Convert to fraction form
    257,562.12/355,435.71 = 142,858.32/x
  3. Step 3: Cross multiply
    257,562.12x = 355,435.71 × 142,858.32
  4. Step 4: Simplify right side
    257,562.12x = 50,776,948,398.61
  5. Step 5: Solve for x
    x = 50,776,948,398.61/257,562.12
  6. Step 6: Final answer
    x = 197,144.47

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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.