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Finding the Fourth Proportional to 428,362.68, 591,133.41 and 234,768.90

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Solution

The fourth proportional to 428,362.68, 591,133.41 and 234,768.90 is: 323,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,362.68 : 591,133.41 = 234,768.90 : x
  2. Step 2: Convert to fraction form
    428,362.68/591,133.41 = 234,768.90/x
  3. Step 3: Cross multiply
    428,362.68x = 591,133.41 × 234,768.90
  4. Step 4: Simplify right side
    428,362.68x = 138,779,740,418.95
  5. Step 5: Solve for x
    x = 138,779,740,418.95/428,362.68
  6. Step 6: Final answer
    x = 323,977.20

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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.