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Finding the Fourth Proportional to 423,190.94, 634,888.89 and 243,391.38

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Solution

The fourth proportional to 423,190.94, 634,888.89 and 243,391.38 is: 365,146.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,190.94 : 634,888.89 = 243,391.38 : x
  2. Step 2: Convert to fraction form
    423,190.94/634,888.89 = 243,391.38/x
  3. Step 3: Cross multiply
    423,190.94x = 634,888.89 × 243,391.38
  4. Step 4: Simplify right side
    423,190.94x = 154,526,483,083.77
  5. Step 5: Solve for x
    x = 154,526,483,083.77/423,190.94
  6. Step 6: Final answer
    x = 365,146.01

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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.