Home / 291,842.16-437,724-81,501.36

Finding the Fourth Proportional to 291,842.16, 437,724 and 81,501.36

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Solution

The fourth proportional to 291,842.16, 437,724 and 81,501.36 is: 122,241.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,842.16 : 437,724 = 81,501.36 : x
  2. Step 2: Convert to fraction form
    291,842.16/437,724 = 81,501.36/x
  3. Step 3: Cross multiply
    291,842.16x = 437,724 × 81,501.36
  4. Step 4: Simplify right side
    291,842.16x = 35,675,101,304.64
  5. Step 5: Solve for x
    x = 35,675,101,304.64/291,842.16
  6. Step 6: Final answer
    x = 122,241.08

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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.