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Finding the Fourth Proportional to 312,178.56, 430,807.49 and 168,938.57

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Solution

The fourth proportional to 312,178.56, 430,807.49 and 168,938.57 is: 233,135.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,178.56 : 430,807.49 = 168,938.57 : x
  2. Step 2: Convert to fraction form
    312,178.56/430,807.49 = 168,938.57/x
  3. Step 3: Cross multiply
    312,178.56x = 430,807.49 × 168,938.57
  4. Step 4: Simplify right side
    312,178.56x = 72,779,998,307.16
  5. Step 5: Solve for x
    x = 72,779,998,307.16/312,178.56
  6. Step 6: Final answer
    x = 233,135.80

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.