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Finding the Fourth Proportional to 305,690.52, 458,626.86 and 145,886.40

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Solution

The fourth proportional to 305,690.52, 458,626.86 and 145,886.40 is: 218,873.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,690.52 : 458,626.86 = 145,886.40 : x
  2. Step 2: Convert to fraction form
    305,690.52/458,626.86 = 145,886.40/x
  3. Step 3: Cross multiply
    305,690.52x = 458,626.86 × 145,886.40
  4. Step 4: Simplify right side
    305,690.52x = 66,907,421,548.70
  5. Step 5: Solve for x
    x = 66,907,421,548.70/305,690.52
  6. Step 6: Final answer
    x = 218,873.07

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1.5x scale

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.