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Finding the Fourth Proportional to 306,207.95, 422,430.59 and 178,827.35

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Solution

The fourth proportional to 306,207.95, 422,430.59 and 178,827.35 is: 246,702.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,207.95 : 422,430.59 = 178,827.35 : x
  2. Step 2: Convert to fraction form
    306,207.95/422,430.59 = 178,827.35/x
  3. Step 3: Cross multiply
    306,207.95x = 422,430.59 × 178,827.35
  4. Step 4: Simplify right side
    306,207.95x = 75,542,141,303.55
  5. Step 5: Solve for x
    x = 75,542,141,303.55/306,207.95
  6. Step 6: Final answer
    x = 246,702.09

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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.