Home / 380,735.10-571,102.65-100,280.70

Finding the Fourth Proportional to 380,735.10, 571,102.65 and 100,280.70

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Solution

The fourth proportional to 380,735.10, 571,102.65 and 100,280.70 is: 150,421.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,735.10 : 571,102.65 = 100,280.70 : x
  2. Step 2: Convert to fraction form
    380,735.10/571,102.65 = 100,280.70/x
  3. Step 3: Cross multiply
    380,735.10x = 571,102.65 × 100,280.70
  4. Step 4: Simplify right side
    380,735.10x = 57,270,573,513.86
  5. Step 5: Solve for x
    x = 57,270,573,513.86/380,735.10
  6. Step 6: Final answer
    x = 150,421.05

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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.