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Finding the Fourth Proportional to 290,499.72, 400,911.12 and 163,182.84

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Solution

The fourth proportional to 290,499.72, 400,911.12 and 163,182.84 is: 225,204.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,499.72 : 400,911.12 = 163,182.84 : x
  2. Step 2: Convert to fraction form
    290,499.72/400,911.12 = 163,182.84/x
  3. Step 3: Cross multiply
    290,499.72x = 400,911.12 × 163,182.84
  4. Step 4: Simplify right side
    290,499.72x = 65,421,815,149.18
  5. Step 5: Solve for x
    x = 65,421,815,149.18/290,499.72
  6. Step 6: Final answer
    x = 225,204.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.