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Finding the Fourth Proportional to 305,920.08, 422,323.20 and 191,262.42

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Solution

The fourth proportional to 305,920.08, 422,323.20 and 191,262.42 is: 264,038.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,920.08 : 422,323.20 = 191,262.42 : x
  2. Step 2: Convert to fraction form
    305,920.08/422,323.20 = 191,262.42/x
  3. Step 3: Cross multiply
    305,920.08x = 422,323.20 × 191,262.42
  4. Step 4: Simplify right side
    305,920.08x = 80,774,557,254.14
  5. Step 5: Solve for x
    x = 80,774,557,254.14/305,920.08
  6. Step 6: Final answer
    x = 264,038.10

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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.