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Finding the Fourth Proportional to 494,570.30, 741,751.58 and 139,501.28

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Solution

The fourth proportional to 494,570.30, 741,751.58 and 139,501.28 is: 209,222.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,570.30 : 741,751.58 = 139,501.28 : x
  2. Step 2: Convert to fraction form
    494,570.30/741,751.58 = 139,501.28/x
  3. Step 3: Cross multiply
    494,570.30x = 741,751.58 × 139,501.28
  4. Step 4: Simplify right side
    494,570.30x = 103,475,294,852.02
  5. Step 5: Solve for x
    x = 103,475,294,852.02/494,570.30
  6. Step 6: Final answer
    x = 209,222.62

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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.