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Finding the Fourth Proportional to 428,783.40, 591,682.32 and 237,796.20

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Solution

The fourth proportional to 428,783.40, 591,682.32 and 237,796.20 is: 328,137.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,783.40 : 591,682.32 = 237,796.20 : x
  2. Step 2: Convert to fraction form
    428,783.40/591,682.32 = 237,796.20/x
  3. Step 3: Cross multiply
    428,783.40x = 591,682.32 × 237,796.20
  4. Step 4: Simplify right side
    428,783.40x = 140,699,807,303.18
  5. Step 5: Solve for x
    x = 140,699,807,303.18/428,783.40
  6. Step 6: Final answer
    x = 328,137.25

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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.