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Finding the Fourth Proportional to 553,603.70, 830,405.55 and 179,626.70

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Solution

The fourth proportional to 553,603.70, 830,405.55 and 179,626.70 is: 269,440.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,603.70 : 830,405.55 = 179,626.70 : x
  2. Step 2: Convert to fraction form
    553,603.70/830,405.55 = 179,626.70/x
  3. Step 3: Cross multiply
    553,603.70x = 830,405.55 × 179,626.70
  4. Step 4: Simplify right side
    553,603.70x = 149,163,008,608.19
  5. Step 5: Solve for x
    x = 149,163,008,608.19/553,603.70
  6. Step 6: Final answer
    x = 269,440.05

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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.