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Finding the Fourth Proportional to 380,277.54, 570,728.16 and 155,640.15

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Solution

The fourth proportional to 380,277.54, 570,728.16 and 155,640.15 is: 233,587.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,277.54 : 570,728.16 = 155,640.15 : x
  2. Step 2: Convert to fraction form
    380,277.54/570,728.16 = 155,640.15/x
  3. Step 3: Cross multiply
    380,277.54x = 570,728.16 × 155,640.15
  4. Step 4: Simplify right side
    380,277.54x = 88,828,216,431.62
  5. Step 5: Solve for x
    x = 88,828,216,431.62/380,277.54
  6. Step 6: Final answer
    x = 233,587.86

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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.