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Finding the Fourth Proportional to 553,803.01, 830,704.43 and 133,078.89

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Solution

The fourth proportional to 553,803.01, 830,704.43 and 133,078.89 is: 199,618.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,803.01 : 830,704.43 = 133,078.89 : x
  2. Step 2: Convert to fraction form
    553,803.01/830,704.43 = 133,078.89/x
  3. Step 3: Cross multiply
    553,803.01x = 830,704.43 × 133,078.89
  4. Step 4: Simplify right side
    553,803.01x = 110,549,223,462.48
  5. Step 5: Solve for x
    x = 110,549,223,462.48/553,803.01
  6. Step 6: Final answer
    x = 199,618.31

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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.