Home / 245,693.40-339,056.21-138,263.45

Finding the Fourth Proportional to 245,693.40, 339,056.21 and 138,263.45

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Solution

The fourth proportional to 245,693.40, 339,056.21 and 138,263.45 is: 190,803.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,693.40 : 339,056.21 = 138,263.45 : x
  2. Step 2: Convert to fraction form
    245,693.40/339,056.21 = 138,263.45/x
  3. Step 3: Cross multiply
    245,693.40x = 339,056.21 × 138,263.45
  4. Step 4: Simplify right side
    245,693.40x = 46,879,078,951.93
  5. Step 5: Solve for x
    x = 46,879,078,951.93/245,693.40
  6. Step 6: Final answer
    x = 190,803.17

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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.