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Finding the Fourth Proportional to 404,718.81, 558,508.83 and 223,431

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Solution

The fourth proportional to 404,718.81, 558,508.83 and 223,431 is: 308,333.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,718.81 : 558,508.83 = 223,431 : x
  2. Step 2: Convert to fraction form
    404,718.81/558,508.83 = 223,431/x
  3. Step 3: Cross multiply
    404,718.81x = 558,508.83 × 223,431
  4. Step 4: Simplify right side
    404,718.81x = 124,788,186,395.73
  5. Step 5: Solve for x
    x = 124,788,186,395.73/404,718.81
  6. Step 6: Final answer
    x = 308,333.05

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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.