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Finding the Fourth Proportional to 312,153.42, 430,773.72 and 183,065.58

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Solution

The fourth proportional to 312,153.42, 430,773.72 and 183,065.58 is: 252,631.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,153.42 : 430,773.72 = 183,065.58 : x
  2. Step 2: Convert to fraction form
    312,153.42/430,773.72 = 183,065.58/x
  3. Step 3: Cross multiply
    312,153.42x = 430,773.72 × 183,065.58
  4. Step 4: Simplify right side
    312,153.42x = 78,859,840,900.56
  5. Step 5: Solve for x
    x = 78,859,840,900.56/312,153.42
  6. Step 6: Final answer
    x = 252,631.67

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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.