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Finding the Fourth Proportional to 403,894.83, 557,373.06 and 220,133.10

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Solution

The fourth proportional to 403,894.83, 557,373.06 and 220,133.10 is: 303,782.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,894.83 : 557,373.06 = 220,133.10 : x
  2. Step 2: Convert to fraction form
    403,894.83/557,373.06 = 220,133.10/x
  3. Step 3: Cross multiply
    403,894.83x = 557,373.06 × 220,133.10
  4. Step 4: Simplify right side
    403,894.83x = 122,696,259,554.29
  5. Step 5: Solve for x
    x = 122,696,259,554.29/403,894.83
  6. Step 6: Final answer
    x = 303,782.69

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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.