Home / 385,148,972.16-531,505,581.63-220,140,084.60

Finding the Fourth Proportional to 385,148,972.16, 531,505,581.63 and 220,140,084.60

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Solution

The fourth proportional to 385,148,972.16, 531,505,581.63 and 220,140,084.60 is: 303,793,316.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,148,972.16 : 531,505,581.63 = 220,140,084.60 : x
  2. Step 2: Convert to fraction form
    385,148,972.16/531,505,581.63 = 220,140,084.60/x
  3. Step 3: Cross multiply
    385,148,972.16x = 531,505,581.63 × 220,140,084.60
  4. Step 4: Simplify right side
    385,148,972.16x = 117,005,683,705,400,400
  5. Step 5: Solve for x
    x = 117,005,683,705,400,400/385,148,972.16
  6. Step 6: Final answer
    x = 303,793,316.78

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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.