Home / 402,497.03-555,459.23-221,215.39

Finding the Fourth Proportional to 402,497.03, 555,459.23 and 221,215.39

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Solution

The fourth proportional to 402,497.03, 555,459.23 and 221,215.39 is: 305,284.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,497.03 : 555,459.23 = 221,215.39 : x
  2. Step 2: Convert to fraction form
    402,497.03/555,459.23 = 221,215.39/x
  3. Step 3: Cross multiply
    402,497.03x = 555,459.23 × 221,215.39
  4. Step 4: Simplify right side
    402,497.03x = 122,876,129,357.94
  5. Step 5: Solve for x
    x = 122,876,129,357.94/402,497.03
  6. Step 6: Final answer
    x = 305,284.56

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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.