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Finding the Fourth Proportional to 553,744.38, 830,663.40 and 154,385.49

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Solution

The fourth proportional to 553,744.38, 830,663.40 and 154,385.49 is: 231,591.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,744.38 : 830,663.40 = 154,385.49 : x
  2. Step 2: Convert to fraction form
    553,744.38/830,663.40 = 154,385.49/x
  3. Step 3: Cross multiply
    553,744.38x = 830,663.40 × 154,385.49
  4. Step 4: Simplify right side
    553,744.38x = 128,242,379,728.00
  5. Step 5: Solve for x
    x = 128,242,379,728.00/553,744.38
  6. Step 6: Final answer
    x = 231,591.30

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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.