Home / 245,814.95-339,223.75-138,385.26

Finding the Fourth Proportional to 245,814.95, 339,223.75 and 138,385.26

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Solution

The fourth proportional to 245,814.95, 339,223.75 and 138,385.26 is: 190,971.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,814.95 : 339,223.75 = 138,385.26 : x
  2. Step 2: Convert to fraction form
    245,814.95/339,223.75 = 138,385.26/x
  3. Step 3: Cross multiply
    245,814.95x = 339,223.75 × 138,385.26
  4. Step 4: Simplify right side
    245,814.95x = 46,943,566,495.96
  5. Step 5: Solve for x
    x = 46,943,566,495.96/245,814.95
  6. Step 6: Final answer
    x = 190,971.16

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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.