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Finding the Fourth Proportional to 380,073.20, 569,879.40 and 190,312.88

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Solution

The fourth proportional to 380,073.20, 569,879.40 and 190,312.88 is: 285,353.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,073.20 : 569,879.40 = 190,312.88 : x
  2. Step 2: Convert to fraction form
    380,073.20/569,879.40 = 190,312.88/x
  3. Step 3: Cross multiply
    380,073.20x = 569,879.40 × 190,312.88
  4. Step 4: Simplify right side
    380,073.20x = 108,455,389,866.67
  5. Step 5: Solve for x
    x = 108,455,389,866.67/380,073.20
  6. Step 6: Final answer
    x = 285,353.95

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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.