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Finding the Fourth Proportional to 380,615.60, 570,923.40 and 191,002.70

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Solution

The fourth proportional to 380,615.60, 570,923.40 and 191,002.70 is: 286,504.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,615.60 : 570,923.40 = 191,002.70 : x
  2. Step 2: Convert to fraction form
    380,615.60/570,923.40 = 191,002.70/x
  3. Step 3: Cross multiply
    380,615.60x = 570,923.40 × 191,002.70
  4. Step 4: Simplify right side
    380,615.60x = 109,047,910,893.18
  5. Step 5: Solve for x
    x = 109,047,910,893.18/380,615.60
  6. Step 6: Final answer
    x = 286,504.05

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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.