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Finding the Fourth Proportional to 580,000.40, 869,309.40 and 243,040.40

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Solution

The fourth proportional to 580,000.40, 869,309.40 and 243,040.40 is: 364,270.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,000.40 : 869,309.40 = 243,040.40 : x
  2. Step 2: Convert to fraction form
    580,000.40/869,309.40 = 243,040.40/x
  3. Step 3: Cross multiply
    580,000.40x = 869,309.40 × 243,040.40
  4. Step 4: Simplify right side
    580,000.40x = 211,277,304,299.76
  5. Step 5: Solve for x
    x = 211,277,304,299.76/580,000.40
  6. Step 6: Final answer
    x = 364,270.96

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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.