Home / 438,501,085.11-657,536,393.79-216,916,407.27

Finding the Fourth Proportional to 438,501,085.11, 657,536,393.79 and 216,916,407.27

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Solution

The fourth proportional to 438,501,085.11, 657,536,393.79 and 216,916,407.27 is: 325,268,139.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,501,085.11 : 657,536,393.79 = 216,916,407.27 : x
  2. Step 2: Convert to fraction form
    438,501,085.11/657,536,393.79 = 216,916,407.27/x
  3. Step 3: Cross multiply
    438,501,085.11x = 657,536,393.79 × 216,916,407.27
  4. Step 4: Simplify right side
    438,501,085.11x = 142,630,432,190,198,736
  5. Step 5: Solve for x
    x = 142,630,432,190,198,736/438,501,085.11
  6. Step 6: Final answer
    x = 325,268,139.65

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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.