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Finding the Fourth Proportional to 408,656.48, 612,465.60 and 183,776.72

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Solution

The fourth proportional to 408,656.48, 612,465.60 and 183,776.72 is: 275,431.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,656.48 : 612,465.60 = 183,776.72 : x
  2. Step 2: Convert to fraction form
    408,656.48/612,465.60 = 183,776.72/x
  3. Step 3: Cross multiply
    408,656.48x = 612,465.60 × 183,776.72
  4. Step 4: Simplify right side
    408,656.48x = 112,556,919,080.83
  5. Step 5: Solve for x
    x = 112,556,919,080.83/408,656.48
  6. Step 6: Final answer
    x = 275,431.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.