Home / 305,985.31-458,977.18-81,345.64

Finding the Fourth Proportional to 305,985.31, 458,977.18 and 81,345.64

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Solution

The fourth proportional to 305,985.31, 458,977.18 and 81,345.64 is: 122,018.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,985.31 : 458,977.18 = 81,345.64 : x
  2. Step 2: Convert to fraction form
    305,985.31/458,977.18 = 81,345.64/x
  3. Step 3: Cross multiply
    305,985.31x = 458,977.18 × 81,345.64
  4. Step 4: Simplify right side
    305,985.31x = 37,335,792,452.50
  5. Step 5: Solve for x
    x = 37,335,792,452.50/305,985.31
  6. Step 6: Final answer
    x = 122,018.25

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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.