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Finding the Fourth Proportional to 553,969.26, 830,789.87 and 154,513.71

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Solution

The fourth proportional to 553,969.26, 830,789.87 and 154,513.71 is: 231,724.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,969.26 : 830,789.87 = 154,513.71 : x
  2. Step 2: Convert to fraction form
    553,969.26/830,789.87 = 154,513.71/x
  3. Step 3: Cross multiply
    553,969.26x = 830,789.87 × 154,513.71
  4. Step 4: Simplify right side
    553,969.26x = 128,368,424,271.55
  5. Step 5: Solve for x
    x = 128,368,424,271.55/553,969.26
  6. Step 6: Final answer
    x = 231,724.81

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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.