Home / 261,421.12-392,014.32-74,388.16

Finding the Fourth Proportional to 261,421.12, 392,014.32 and 74,388.16

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Solution

The fourth proportional to 261,421.12, 392,014.32 and 74,388.16 is: 111,548.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,421.12 : 392,014.32 = 74,388.16 : x
  2. Step 2: Convert to fraction form
    261,421.12/392,014.32 = 74,388.16/x
  3. Step 3: Cross multiply
    261,421.12x = 392,014.32 × 74,388.16
  4. Step 4: Simplify right side
    261,421.12x = 29,161,223,958.45
  5. Step 5: Solve for x
    x = 29,161,223,958.45/261,421.12
  6. Step 6: Final answer
    x = 111,548.84

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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.