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Finding the Fourth Proportional to 245,379.65, 338,621.88 and 137,950.16

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Solution

The fourth proportional to 245,379.65, 338,621.88 and 137,950.16 is: 190,370.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,379.65 : 338,621.88 = 137,950.16 : x
  2. Step 2: Convert to fraction form
    245,379.65/338,621.88 = 137,950.16/x
  3. Step 3: Cross multiply
    245,379.65x = 338,621.88 × 137,950.16
  4. Step 4: Simplify right side
    245,379.65x = 46,712,942,525.50
  5. Step 5: Solve for x
    x = 46,712,942,525.50/245,379.65
  6. Step 6: Final answer
    x = 190,370.08

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Why These Related Problems?

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