Home / 257,529.31-355,383.89-142,806.13

Finding the Fourth Proportional to 257,529.31, 355,383.89 and 142,806.13

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Solution

The fourth proportional to 257,529.31, 355,383.89 and 142,806.13 is: 197,068.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,529.31 : 355,383.89 = 142,806.13 : x
  2. Step 2: Convert to fraction form
    257,529.31/355,383.89 = 142,806.13/x
  3. Step 3: Cross multiply
    257,529.31x = 355,383.89 × 142,806.13
  4. Step 4: Simplify right side
    257,529.31x = 50,750,997,995.25
  5. Step 5: Solve for x
    x = 50,750,997,995.25/257,529.31
  6. Step 6: Final answer
    x = 197,068.82

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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.