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Finding the Fourth Proportional to 310,337.40, 428,321.34 and 183,005.40

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Solution

The fourth proportional to 310,337.40, 428,321.34 and 183,005.40 is: 252,580.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,337.40 : 428,321.34 = 183,005.40 : x
  2. Step 2: Convert to fraction form
    310,337.40/428,321.34 = 183,005.40/x
  3. Step 3: Cross multiply
    310,337.40x = 428,321.34 × 183,005.40
  4. Step 4: Simplify right side
    310,337.40x = 78,385,118,155.24
  5. Step 5: Solve for x
    x = 78,385,118,155.24/310,337.40
  6. Step 6: Final answer
    x = 252,580.31

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.