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Finding the Fourth Proportional to 245,465.42, 338,740.14 and 138,033.16

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Solution

The fourth proportional to 245,465.42, 338,740.14 and 138,033.16 is: 190,484.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,465.42 : 338,740.14 = 138,033.16 : x
  2. Step 2: Convert to fraction form
    245,465.42/338,740.14 = 138,033.16/x
  3. Step 3: Cross multiply
    245,465.42x = 338,740.14 × 138,033.16
  4. Step 4: Simplify right side
    245,465.42x = 46,757,371,943.04
  5. Step 5: Solve for x
    x = 46,757,371,943.04/245,465.42
  6. Step 6: Final answer
    x = 190,484.56

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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.