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Finding the Fourth Proportional to 231,783.40, 347,675.10 and 84,020.20

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Solution

The fourth proportional to 231,783.40, 347,675.10 and 84,020.20 is: 126,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,783.40 : 347,675.10 = 84,020.20 : x
  2. Step 2: Convert to fraction form
    231,783.40/347,675.10 = 84,020.20/x
  3. Step 3: Cross multiply
    231,783.40x = 347,675.10 × 84,020.20
  4. Step 4: Simplify right side
    231,783.40x = 29,211,731,437.02
  5. Step 5: Solve for x
    x = 29,211,731,437.02/231,783.40
  6. Step 6: Final answer
    x = 126,030.30

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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.