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Finding the Fourth Proportional to 553,892.23, 830,978.39 and 154,532.81

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Solution

The fourth proportional to 553,892.23, 830,978.39 and 154,532.81 is: 231,838.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,892.23 : 830,978.39 = 154,532.81 : x
  2. Step 2: Convert to fraction form
    553,892.23/830,978.39 = 154,532.81/x
  3. Step 3: Cross multiply
    553,892.23x = 830,978.39 × 154,532.81
  4. Step 4: Simplify right side
    553,892.23x = 128,413,428,119.75
  5. Step 5: Solve for x
    x = 128,413,428,119.75/553,892.23
  6. Step 6: Final answer
    x = 231,838.29

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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.