Home / 356,300.61-491,508.48-220,291.08

Finding the Fourth Proportional to 356,300.61, 491,508.48 and 220,291.08

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Solution

The fourth proportional to 356,300.61, 491,508.48 and 220,291.08 is: 303,886.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,300.61 : 491,508.48 = 220,291.08 : x
  2. Step 2: Convert to fraction form
    356,300.61/491,508.48 = 220,291.08/x
  3. Step 3: Cross multiply
    356,300.61x = 491,508.48 × 220,291.08
  4. Step 4: Simplify right side
    356,300.61x = 108,274,933,888.36
  5. Step 5: Solve for x
    x = 108,274,933,888.36/356,300.61
  6. Step 6: Final answer
    x = 303,886.47

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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.