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Finding the Fourth Proportional to 245,151.59, 338,290.99 and 137,739.51

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Solution

The fourth proportional to 245,151.59, 338,290.99 and 137,739.51 is: 190,070.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,151.59 : 338,290.99 = 137,739.51 : x
  2. Step 2: Convert to fraction form
    245,151.59/338,290.99 = 137,739.51/x
  3. Step 3: Cross multiply
    245,151.59x = 338,290.99 × 137,739.51
  4. Step 4: Simplify right side
    245,151.59x = 46,596,034,855.67
  5. Step 5: Solve for x
    x = 46,596,034,855.67/245,151.59
  6. Step 6: Final answer
    x = 190,070.30

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1.5x scale

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.