Home / 219,261.47-328,695.35-86,237.19

Finding the Fourth Proportional to 219,261.47, 328,695.35 and 86,237.19

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Solution

The fourth proportional to 219,261.47, 328,695.35 and 86,237.19 is: 129,278.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,261.47 : 328,695.35 = 86,237.19 : x
  2. Step 2: Convert to fraction form
    219,261.47/328,695.35 = 86,237.19/x
  3. Step 3: Cross multiply
    219,261.47x = 328,695.35 × 86,237.19
  4. Step 4: Simplify right side
    219,261.47x = 28,345,762,918.88
  5. Step 5: Solve for x
    x = 28,345,762,918.88/219,261.47
  6. Step 6: Final answer
    x = 129,278.36

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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.