Home / 245,228.64-338,397.12-137,781.60

Finding the Fourth Proportional to 245,228.64, 338,397.12 and 137,781.60

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Solution

The fourth proportional to 245,228.64, 338,397.12 and 137,781.60 is: 190,128.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,228.64 : 338,397.12 = 137,781.60 : x
  2. Step 2: Convert to fraction form
    245,228.64/338,397.12 = 137,781.60/x
  3. Step 3: Cross multiply
    245,228.64x = 338,397.12 × 137,781.60
  4. Step 4: Simplify right side
    245,228.64x = 46,624,896,628.99
  5. Step 5: Solve for x
    x = 46,624,896,628.99/245,228.64
  6. Step 6: Final answer
    x = 190,128.27

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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.