Home / 261,488.21-392,442.48-135,165.45

Finding the Fourth Proportional to 261,488.21, 392,442.48 and 135,165.45

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Solution

The fourth proportional to 261,488.21, 392,442.48 and 135,165.45 is: 202,856.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,488.21 : 392,442.48 = 135,165.45 : x
  2. Step 2: Convert to fraction form
    261,488.21/392,442.48 = 135,165.45/x
  3. Step 3: Cross multiply
    261,488.21x = 392,442.48 × 135,165.45
  4. Step 4: Simplify right side
    261,488.21x = 53,044,664,408.32
  5. Step 5: Solve for x
    x = 53,044,664,408.32/261,488.21
  6. Step 6: Final answer
    x = 202,856.81

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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.