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Finding the Fourth Proportional to 270,445.64, 405,637.48 and 70,785.30

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Solution

The fourth proportional to 270,445.64, 405,637.48 and 70,785.30 is: 106,169.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,445.64 : 405,637.48 = 70,785.30 : x
  2. Step 2: Convert to fraction form
    270,445.64/405,637.48 = 70,785.30/x
  3. Step 3: Cross multiply
    270,445.64x = 405,637.48 × 70,785.30
  4. Step 4: Simplify right side
    270,445.64x = 28,713,170,359.12
  5. Step 5: Solve for x
    x = 28,713,170,359.12/270,445.64
  6. Step 6: Final answer
    x = 106,169.84

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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.