Home / 280,157,109.15-420,298,649.33-165,082,417.95

Finding the Fourth Proportional to 280,157,109.15, 420,298,649.33 and 165,082,417.95

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Solution

The fourth proportional to 280,157,109.15, 420,298,649.33 and 165,082,417.95 is: 247,660,741.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,157,109.15 : 420,298,649.33 = 165,082,417.95 : x
  2. Step 2: Convert to fraction form
    280,157,109.15/420,298,649.33 = 165,082,417.95/x
  3. Step 3: Cross multiply
    280,157,109.15x = 420,298,649.33 × 165,082,417.95
  4. Step 4: Simplify right side
    280,157,109.15x = 69,383,917,291,690,128
  5. Step 5: Solve for x
    x = 69,383,917,291,690,128/280,157,109.15
  6. Step 6: Final answer
    x = 247,660,741.15

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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.