Home / 428,830.05-591,770.34-237,861.21

Finding the Fourth Proportional to 428,830.05, 591,770.34 and 237,861.21

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Solution

The fourth proportional to 428,830.05, 591,770.34 and 237,861.21 is: 328,240.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,830.05 : 591,770.34 = 237,861.21 : x
  2. Step 2: Convert to fraction form
    428,830.05/591,770.34 = 237,861.21/x
  3. Step 3: Cross multiply
    428,830.05x = 591,770.34 × 237,861.21
  4. Step 4: Simplify right side
    428,830.05x = 140,759,209,114.51
  5. Step 5: Solve for x
    x = 140,759,209,114.51/428,830.05
  6. Step 6: Final answer
    x = 328,240.08

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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.