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Finding the Fourth Proportional to 553,859.98, 830,789.70 and 133,135.72

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Solution

The fourth proportional to 553,859.98, 830,789.70 and 133,135.72 is: 199,703.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,859.98 : 830,789.70 = 133,135.72 : x
  2. Step 2: Convert to fraction form
    553,859.98/830,789.70 = 133,135.72/x
  3. Step 3: Cross multiply
    553,859.98x = 830,789.70 × 133,135.72
  4. Step 4: Simplify right side
    553,859.98x = 110,607,784,878.08
  5. Step 5: Solve for x
    x = 110,607,784,878.08/553,859.98
  6. Step 6: Final answer
    x = 199,703.52

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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.