Home / 253,145.38-349,351.48-138,417.18

Finding the Fourth Proportional to 253,145.38, 349,351.48 and 138,417.18

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Solution

The fourth proportional to 253,145.38, 349,351.48 and 138,417.18 is: 191,021.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,145.38 : 349,351.48 = 138,417.18 : x
  2. Step 2: Convert to fraction form
    253,145.38/349,351.48 = 138,417.18/x
  3. Step 3: Cross multiply
    253,145.38x = 349,351.48 × 138,417.18
  4. Step 4: Simplify right side
    253,145.38x = 48,356,246,690.43
  5. Step 5: Solve for x
    x = 48,356,246,690.43/253,145.38
  6. Step 6: Final answer
    x = 191,021.64

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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.