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Finding the Fourth Proportional to 553,434.88, 830,069.70 and 154,034.02

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Solution

The fourth proportional to 553,434.88, 830,069.70 and 154,034.02 is: 231,028.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,434.88 : 830,069.70 = 154,034.02 : x
  2. Step 2: Convert to fraction form
    553,434.88/830,069.70 = 154,034.02/x
  3. Step 3: Cross multiply
    553,434.88x = 830,069.70 × 154,034.02
  4. Step 4: Simplify right side
    553,434.88x = 127,858,972,771.19
  5. Step 5: Solve for x
    x = 127,858,972,771.19/553,434.88
  6. Step 6: Final answer
    x = 231,028.03

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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.