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Finding the Fourth Proportional to 245,888.62, 339,317.17 and 136,990.40

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Solution

The fourth proportional to 245,888.62, 339,317.17 and 136,990.40 is: 189,041.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,888.62 : 339,317.17 = 136,990.40 : x
  2. Step 2: Convert to fraction form
    245,888.62/339,317.17 = 136,990.40/x
  3. Step 3: Cross multiply
    245,888.62x = 339,317.17 × 136,990.40
  4. Step 4: Simplify right side
    245,888.62x = 46,483,192,806.11
  5. Step 5: Solve for x
    x = 46,483,192,806.11/245,888.62
  6. Step 6: Final answer
    x = 189,041.66

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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.