Home / 405,298.11-607,421.34-165,132.72

Finding the Fourth Proportional to 405,298.11, 607,421.34 and 165,132.72

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Solution

The fourth proportional to 405,298.11, 607,421.34 and 165,132.72 is: 247,484.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,298.11 : 607,421.34 = 165,132.72 : x
  2. Step 2: Convert to fraction form
    405,298.11/607,421.34 = 165,132.72/x
  3. Step 3: Cross multiply
    405,298.11x = 607,421.34 × 165,132.72
  4. Step 4: Simplify right side
    405,298.11x = 100,305,138,060.25
  5. Step 5: Solve for x
    x = 100,305,138,060.25/405,298.11
  6. Step 6: Final answer
    x = 247,484.84

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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.