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Finding the Fourth Proportional to 428,384.64, 591,181.44 and 237,400.32

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Solution

The fourth proportional to 428,384.64, 591,181.44 and 237,400.32 is: 327,618.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,384.64 : 591,181.44 = 237,400.32 : x
  2. Step 2: Convert to fraction form
    428,384.64/591,181.44 = 237,400.32/x
  3. Step 3: Cross multiply
    428,384.64x = 591,181.44 × 237,400.32
  4. Step 4: Simplify right side
    428,384.64x = 140,346,663,034.06
  5. Step 5: Solve for x
    x = 140,346,663,034.06/428,384.64
  6. Step 6: Final answer
    x = 327,618.34

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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.