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Finding the Fourth Proportional to 403,609.70, 556,981.40 and 222,321.08

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Solution

The fourth proportional to 403,609.70, 556,981.40 and 222,321.08 is: 306,803.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,609.70 : 556,981.40 = 222,321.08 : x
  2. Step 2: Convert to fraction form
    403,609.70/556,981.40 = 222,321.08/x
  3. Step 3: Cross multiply
    403,609.70x = 556,981.40 × 222,321.08
  4. Step 4: Simplify right side
    403,609.70x = 123,828,706,387.91
  5. Step 5: Solve for x
    x = 123,828,706,387.91/403,609.70
  6. Step 6: Final answer
    x = 306,803.10

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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.