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Finding the Fourth Proportional to 380,099.66, 570,100.28 and 127,320.74

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Solution

The fourth proportional to 380,099.66, 570,100.28 and 127,320.74 is: 190,964.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,099.66 : 570,100.28 = 127,320.74 : x
  2. Step 2: Convert to fraction form
    380,099.66/570,100.28 = 127,320.74/x
  3. Step 3: Cross multiply
    380,099.66x = 570,100.28 × 127,320.74
  4. Step 4: Simplify right side
    380,099.66x = 72,585,586,036.70
  5. Step 5: Solve for x
    x = 72,585,586,036.70/380,099.66
  6. Step 6: Final answer
    x = 190,964.62

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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.