Home / 290,012,813.22-435,007,422.32-71,657,656.64

Finding the Fourth Proportional to 290,012,813.22, 435,007,422.32 and 71,657,656.64

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Solution

The fourth proportional to 290,012,813.22, 435,007,422.32 and 71,657,656.64 is: 107,483,569.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,012,813.22 : 435,007,422.32 = 71,657,656.64 : x
  2. Step 2: Convert to fraction form
    290,012,813.22/435,007,422.32 = 71,657,656.64/x
  3. Step 3: Cross multiply
    290,012,813.22x = 435,007,422.32 × 71,657,656.64
  4. Step 4: Simplify right side
    290,012,813.22x = 31,171,612,501,924,708
  5. Step 5: Solve for x
    x = 31,171,612,501,924,708/290,012,813.22
  6. Step 6: Final answer
    x = 107,483,569.97

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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.