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Finding the Fourth Proportional to 553,807.91, 830,711.77 and 133,083.79

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Solution

The fourth proportional to 553,807.91, 830,711.77 and 133,083.79 is: 199,625.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,807.91 : 830,711.77 = 133,083.79 : x
  2. Step 2: Convert to fraction form
    553,807.91/830,711.77 = 133,083.79/x
  3. Step 3: Cross multiply
    553,807.91x = 830,711.77 × 133,083.79
  4. Step 4: Simplify right side
    553,807.91x = 110,554,268,339.72
  5. Step 5: Solve for x
    x = 110,554,268,339.72/553,807.91
  6. Step 6: Final answer
    x = 199,625.66

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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.