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Finding the Fourth Proportional to 245,367.36, 338,607 and 137,937.60

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Solution

The fourth proportional to 245,367.36, 338,607 and 137,937.60 is: 190,353.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,367.36 : 338,607 = 137,937.60 : x
  2. Step 2: Convert to fraction form
    245,367.36/338,607 = 137,937.60/x
  3. Step 3: Cross multiply
    245,367.36x = 338,607 × 137,937.60
  4. Step 4: Simplify right side
    245,367.36x = 46,706,636,923.20
  5. Step 5: Solve for x
    x = 46,706,636,923.20/245,367.36
  6. Step 6: Final answer
    x = 190,353.91

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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.