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Finding the Fourth Proportional to 404,364.19, 558,021 and 223,087.40

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Solution

The fourth proportional to 404,364.19, 558,021 and 223,087.40 is: 307,859.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,364.19 : 558,021 = 223,087.40 : x
  2. Step 2: Convert to fraction form
    404,364.19/558,021 = 223,087.40/x
  3. Step 3: Cross multiply
    404,364.19x = 558,021 × 223,087.40
  4. Step 4: Simplify right side
    404,364.19x = 124,487,454,035.40
  5. Step 5: Solve for x
    x = 124,487,454,035.40/404,364.19
  6. Step 6: Final answer
    x = 307,859.74

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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.