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Finding the Fourth Proportional to 553,696.40, 830,933.40 and 238,379.60

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Solution

The fourth proportional to 553,696.40, 830,933.40 and 238,379.60 is: 357,736.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,696.40 : 830,933.40 = 238,379.60 : x
  2. Step 2: Convert to fraction form
    553,696.40/830,933.40 = 238,379.60/x
  3. Step 3: Cross multiply
    553,696.40x = 830,933.40 × 238,379.60
  4. Step 4: Simplify right side
    553,696.40x = 198,077,571,518.64
  5. Step 5: Solve for x
    x = 198,077,571,518.64/553,696.40
  6. Step 6: Final answer
    x = 357,736.79

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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.