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Finding the Fourth Proportional to 492,427.81, 738,129.58 and 207,880.89

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Solution

The fourth proportional to 492,427.81, 738,129.58 and 207,880.89 is: 311,605.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,427.81 : 738,129.58 = 207,880.89 : x
  2. Step 2: Convert to fraction form
    492,427.81/738,129.58 = 207,880.89/x
  3. Step 3: Cross multiply
    492,427.81x = 738,129.58 × 207,880.89
  4. Step 4: Simplify right side
    492,427.81x = 153,443,030,738.04
  5. Step 5: Solve for x
    x = 153,443,030,738.04/492,427.81
  6. Step 6: Final answer
    x = 311,605.13

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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.