Home / 245,239.40-338,440.38-137,809.10

Finding the Fourth Proportional to 245,239.40, 338,440.38 and 137,809.10

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Solution

The fourth proportional to 245,239.40, 338,440.38 and 137,809.10 is: 190,182.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,239.40 : 338,440.38 = 137,809.10 : x
  2. Step 2: Convert to fraction form
    245,239.40/338,440.38 = 137,809.10/x
  3. Step 3: Cross multiply
    245,239.40x = 338,440.38 × 137,809.10
  4. Step 4: Simplify right side
    245,239.40x = 46,640,164,171.46
  5. Step 5: Solve for x
    x = 46,640,164,171.46/245,239.40
  6. Step 6: Final answer
    x = 190,182.18

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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.