Home / 369,142.68-509,421.66-218,238.36

Finding the Fourth Proportional to 369,142.68, 509,421.66 and 218,238.36

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Solution

The fourth proportional to 369,142.68, 509,421.66 and 218,238.36 is: 301,171.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,142.68 : 509,421.66 = 218,238.36 : x
  2. Step 2: Convert to fraction form
    369,142.68/509,421.66 = 218,238.36/x
  3. Step 3: Cross multiply
    369,142.68x = 509,421.66 × 218,238.36
  4. Step 4: Simplify right side
    369,142.68x = 111,175,347,626.88
  5. Step 5: Solve for x
    x = 111,175,347,626.88/369,142.68
  6. Step 6: Final answer
    x = 301,171.75

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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.