Home / 245,887.16-339,356.61-138,478.19

Finding the Fourth Proportional to 245,887.16, 339,356.61 and 138,478.19

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Solution

The fourth proportional to 245,887.16, 339,356.61 and 138,478.19 is: 191,118.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,887.16 : 339,356.61 = 138,478.19 : x
  2. Step 2: Convert to fraction form
    245,887.16/339,356.61 = 138,478.19/x
  3. Step 3: Cross multiply
    245,887.16x = 339,356.61 × 138,478.19
  4. Step 4: Simplify right side
    245,887.16x = 46,993,487,420.55
  5. Step 5: Solve for x
    x = 46,993,487,420.55/245,887.16
  6. Step 6: Final answer
    x = 191,118.11

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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.