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Finding the Fourth Proportional to 310,023.60, 427,923.45 and 202,610.31

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Solution

The fourth proportional to 310,023.60, 427,923.45 and 202,610.31 is: 279,661.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,023.60 : 427,923.45 = 202,610.31 : x
  2. Step 2: Convert to fraction form
    310,023.60/427,923.45 = 202,610.31/x
  3. Step 3: Cross multiply
    310,023.60x = 427,923.45 × 202,610.31
  4. Step 4: Simplify right side
    310,023.60x = 86,701,702,860.77
  5. Step 5: Solve for x
    x = 86,701,702,860.77/310,023.60
  6. Step 6: Final answer
    x = 279,661.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.