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Finding the Fourth Proportional to 401,763.60, 554,432.04 and 220,478.48

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Solution

The fourth proportional to 401,763.60, 554,432.04 and 220,478.48 is: 304,259.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,763.60 : 554,432.04 = 220,478.48 : x
  2. Step 2: Convert to fraction form
    401,763.60/554,432.04 = 220,478.48/x
  3. Step 3: Cross multiply
    401,763.60x = 554,432.04 × 220,478.48
  4. Step 4: Simplify right side
    401,763.60x = 122,240,333,442.50
  5. Step 5: Solve for x
    x = 122,240,333,442.50/401,763.60
  6. Step 6: Final answer
    x = 304,259.35

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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.