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Finding the Fourth Proportional to 380,802.37, 570,602.73 and 140,585.66

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Solution

The fourth proportional to 380,802.37, 570,602.73 and 140,585.66 is: 210,656.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,802.37 : 570,602.73 = 140,585.66 : x
  2. Step 2: Convert to fraction form
    380,802.37/570,602.73 = 140,585.66/x
  3. Step 3: Cross multiply
    380,802.37x = 570,602.73 × 140,585.66
  4. Step 4: Simplify right side
    380,802.37x = 80,218,561,394.85
  5. Step 5: Solve for x
    x = 80,218,561,394.85/380,802.37
  6. Step 6: Final answer
    x = 210,656.68

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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.