Home / 222,492,820.14-307,017,969.10-128,437,268.29

Finding the Fourth Proportional to 222,492,820.14, 307,017,969.10 and 128,437,268.29

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Solution

The fourth proportional to 222,492,820.14, 307,017,969.10 and 128,437,268.29 is: 177,230,659.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,492,820.14 : 307,017,969.10 = 128,437,268.29 : x
  2. Step 2: Convert to fraction form
    222,492,820.14/307,017,969.10 = 128,437,268.29/x
  3. Step 3: Cross multiply
    222,492,820.14x = 307,017,969.10 × 128,437,268.29
  4. Step 4: Simplify right side
    222,492,820.14x = 39,432,549,266,058,992
  5. Step 5: Solve for x
    x = 39,432,549,266,058,992/222,492,820.14
  6. Step 6: Final answer
    x = 177,230,659.58

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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.