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Finding the Fourth Proportional to 492,341.80, 738,501.90 and 137,345.80

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Solution

The fourth proportional to 492,341.80, 738,501.90 and 137,345.80 is: 206,015.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,341.80 : 738,501.90 = 137,345.80 : x
  2. Step 2: Convert to fraction form
    492,341.80/738,501.90 = 137,345.80/x
  3. Step 3: Cross multiply
    492,341.80x = 738,501.90 × 137,345.80
  4. Step 4: Simplify right side
    492,341.80x = 101,430,134,257.02
  5. Step 5: Solve for x
    x = 101,430,134,257.02/492,341.80
  6. Step 6: Final answer
    x = 206,015.69

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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.