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Finding the Fourth Proportional to 145,228.95, 217,843.60 and 45,389.67

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Solution

The fourth proportional to 145,228.95, 217,843.60 and 45,389.67 is: 68,084.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,228.95 : 217,843.60 = 45,389.67 : x
  2. Step 2: Convert to fraction form
    145,228.95/217,843.60 = 45,389.67/x
  3. Step 3: Cross multiply
    145,228.95x = 217,843.60 × 45,389.67
  4. Step 4: Simplify right side
    145,228.95x = 9,887,848,110.76
  5. Step 5: Solve for x
    x = 9,887,848,110.76/145,228.95
  6. Step 6: Final answer
    x = 68,084.55

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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.