Home / 240,205.08-331,515.95-138,228.45

Finding the Fourth Proportional to 240,205.08, 331,515.95 and 138,228.45

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Solution

The fourth proportional to 240,205.08, 331,515.95 and 138,228.45 is: 190,774.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,205.08 : 331,515.95 = 138,228.45 : x
  2. Step 2: Convert to fraction form
    240,205.08/331,515.95 = 138,228.45/x
  3. Step 3: Cross multiply
    240,205.08x = 331,515.95 × 138,228.45
  4. Step 4: Simplify right side
    240,205.08x = 45,824,935,918.78
  5. Step 5: Solve for x
    x = 45,824,935,918.78/240,205.08
  6. Step 6: Final answer
    x = 190,774.22

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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.