Home / 385,148,963.91-531,505,570.25-220,140,076.35

Finding the Fourth Proportional to 385,148,963.91, 531,505,570.25 and 220,140,076.35

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Solution

The fourth proportional to 385,148,963.91, 531,505,570.25 and 220,140,076.35 is: 303,793,305.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,148,963.91 : 531,505,570.25 = 220,140,076.35 : x
  2. Step 2: Convert to fraction form
    385,148,963.91/531,505,570.25 = 220,140,076.35/x
  3. Step 3: Cross multiply
    385,148,963.91x = 531,505,570.25 × 220,140,076.35
  4. Step 4: Simplify right side
    385,148,963.91x = 117,005,676,814,184,592
  5. Step 5: Solve for x
    x = 117,005,676,814,184,592/385,148,963.91
  6. Step 6: Final answer
    x = 303,793,305.39

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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.