Home / 257,563.12-355,437.09-142,859.32

Finding the Fourth Proportional to 257,563.12, 355,437.09 and 142,859.32

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Solution

The fourth proportional to 257,563.12, 355,437.09 and 142,859.32 is: 197,145.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,563.12 : 355,437.09 = 142,859.32 : x
  2. Step 2: Convert to fraction form
    257,563.12/355,437.09 = 142,859.32/x
  3. Step 3: Cross multiply
    257,563.12x = 355,437.09 × 142,859.32
  4. Step 4: Simplify right side
    257,563.12x = 50,777,500,980.18
  5. Step 5: Solve for x
    x = 50,777,500,980.18/257,563.12
  6. Step 6: Final answer
    x = 197,145.85

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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.