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Finding the Fourth Proportional to 403,010.68, 556,154.76 and 221,718.73

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Solution

The fourth proportional to 403,010.68, 556,154.76 and 221,718.73 is: 305,971.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,010.68 : 556,154.76 = 221,718.73 : x
  2. Step 2: Convert to fraction form
    403,010.68/556,154.76 = 221,718.73/x
  3. Step 3: Cross multiply
    403,010.68x = 556,154.76 × 221,718.73
  4. Step 4: Simplify right side
    403,010.68x = 123,309,927,070.66
  5. Step 5: Solve for x
    x = 123,309,927,070.66/403,010.68
  6. Step 6: Final answer
    x = 305,971.86

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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.