Home / 400,148,575.10-552,193,173.74-221,540,423.78

Finding the Fourth Proportional to 400,148,575.10, 552,193,173.74 and 221,540,423.78

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Solution

The fourth proportional to 400,148,575.10, 552,193,173.74 and 221,540,423.78 is: 305,719,218.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,148,575.10 : 552,193,173.74 = 221,540,423.78 : x
  2. Step 2: Convert to fraction form
    400,148,575.10/552,193,173.74 = 221,540,423.78/x
  3. Step 3: Cross multiply
    400,148,575.10x = 552,193,173.74 × 221,540,423.78
  4. Step 4: Simplify right side
    400,148,575.10x = 122,333,109,716,021,808
  5. Step 5: Solve for x
    x = 122,333,109,716,021,808/400,148,575.10
  6. Step 6: Final answer
    x = 305,719,218.63

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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.