Home / 261,408.36-392,113.08-71,871.24

Finding the Fourth Proportional to 261,408.36, 392,113.08 and 71,871.24

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Solution

The fourth proportional to 261,408.36, 392,113.08 and 71,871.24 is: 107,807.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,408.36 : 392,113.08 = 71,871.24 : x
  2. Step 2: Convert to fraction form
    261,408.36/392,113.08 = 71,871.24/x
  3. Step 3: Cross multiply
    261,408.36x = 392,113.08 × 71,871.24
  4. Step 4: Simplify right side
    261,408.36x = 28,181,653,279.82
  5. Step 5: Solve for x
    x = 28,181,653,279.82/261,408.36
  6. Step 6: Final answer
    x = 107,807.01

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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.