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Finding the Fourth Proportional to 553,818.51, 830,745.99 and 154,425.56

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Solution

The fourth proportional to 553,818.51, 830,745.99 and 154,425.56 is: 231,643.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,818.51 : 830,745.99 = 154,425.56 : x
  2. Step 2: Convert to fraction form
    553,818.51/830,745.99 = 154,425.56/x
  3. Step 3: Cross multiply
    553,818.51x = 830,745.99 × 154,425.56
  4. Step 4: Simplify right side
    553,818.51x = 128,288,410,569.77
  5. Step 5: Solve for x
    x = 128,288,410,569.77/553,818.51
  6. Step 6: Final answer
    x = 231,643.41

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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.