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Finding the Fourth Proportional to 553,699.40, 830,937.90 and 238,382.60

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Solution

The fourth proportional to 553,699.40, 830,937.90 and 238,382.60 is: 357,741.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,699.40 : 830,937.90 = 238,382.60 : x
  2. Step 2: Convert to fraction form
    553,699.40/830,937.90 = 238,382.60/x
  3. Step 3: Cross multiply
    553,699.40x = 830,937.90 × 238,382.60
  4. Step 4: Simplify right side
    553,699.40x = 198,081,137,040.54
  5. Step 5: Solve for x
    x = 198,081,137,040.54/553,699.40
  6. Step 6: Final answer
    x = 357,741.29

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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.