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Finding the Fourth Proportional to 228,285.90, 342,475.53 and 78,506.73

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Solution

The fourth proportional to 228,285.90, 342,475.53 and 78,506.73 is: 117,776.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,285.90 : 342,475.53 = 78,506.73 : x
  2. Step 2: Convert to fraction form
    228,285.90/342,475.53 = 78,506.73/x
  3. Step 3: Cross multiply
    228,285.90x = 342,475.53 × 78,506.73
  4. Step 4: Simplify right side
    228,285.90x = 26,886,633,965.32
  5. Step 5: Solve for x
    x = 26,886,633,965.32/228,285.90
  6. Step 6: Final answer
    x = 117,776.15

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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.