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Finding the Fourth Proportional to 553,670.10, 830,505.15 and 132,945.98

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Solution

The fourth proportional to 553,670.10, 830,505.15 and 132,945.98 is: 199,418.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,670.10 : 830,505.15 = 132,945.98 : x
  2. Step 2: Convert to fraction form
    553,670.10/830,505.15 = 132,945.98/x
  3. Step 3: Cross multiply
    553,670.10x = 830,505.15 × 132,945.98
  4. Step 4: Simplify right side
    553,670.10x = 110,412,316,909.27
  5. Step 5: Solve for x
    x = 110,412,316,909.27/553,670.10
  6. Step 6: Final answer
    x = 199,418.96

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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.