Home / 385,148,969.16-531,505,577.49-220,140,081.60

Finding the Fourth Proportional to 385,148,969.16, 531,505,577.49 and 220,140,081.60

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Solution

The fourth proportional to 385,148,969.16, 531,505,577.49 and 220,140,081.60 is: 303,793,312.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,148,969.16 : 531,505,577.49 = 220,140,081.60 : x
  2. Step 2: Convert to fraction form
    385,148,969.16/531,505,577.49 = 220,140,081.60/x
  3. Step 3: Cross multiply
    385,148,969.16x = 531,505,577.49 × 220,140,081.60
  4. Step 4: Simplify right side
    385,148,969.16x = 117,005,681,196,685,040
  5. Step 5: Solve for x
    x = 117,005,681,196,685,040/385,148,969.16
  6. Step 6: Final answer
    x = 303,793,312.63

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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.