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Finding the Fourth Proportional to 315,133.44, 472,560.72 and 90,441.74

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Solution

The fourth proportional to 315,133.44, 472,560.72 and 90,441.74 is: 135,622.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,133.44 : 472,560.72 = 90,441.74 : x
  2. Step 2: Convert to fraction form
    315,133.44/472,560.72 = 90,441.74/x
  3. Step 3: Cross multiply
    315,133.44x = 472,560.72 × 90,441.74
  4. Step 4: Simplify right side
    315,133.44x = 42,739,211,409.65
  5. Step 5: Solve for x
    x = 42,739,211,409.65/315,133.44
  6. Step 6: Final answer
    x = 135,622.58

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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.