Home / 257,875.60-355,850.49-143,145.22

Finding the Fourth Proportional to 257,875.60, 355,850.49 and 143,145.22

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Solution

The fourth proportional to 257,875.60, 355,850.49 and 143,145.22 is: 197,530.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,875.60 : 355,850.49 = 143,145.22 : x
  2. Step 2: Convert to fraction form
    257,875.60/355,850.49 = 143,145.22/x
  3. Step 3: Cross multiply
    257,875.60x = 355,850.49 × 143,145.22
  4. Step 4: Simplify right side
    257,875.60x = 50,938,296,678.16
  5. Step 5: Solve for x
    x = 50,938,296,678.16/257,875.60
  6. Step 6: Final answer
    x = 197,530.50

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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.