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Finding the Fourth Proportional to 245,155.46, 338,306.70 and 136,259.28

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Solution

The fourth proportional to 245,155.46, 338,306.70 and 136,259.28 is: 188,033.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,155.46 : 338,306.70 = 136,259.28 : x
  2. Step 2: Convert to fraction form
    245,155.46/338,306.70 = 136,259.28/x
  3. Step 3: Cross multiply
    245,155.46x = 338,306.70 × 136,259.28
  4. Step 4: Simplify right side
    245,155.46x = 46,097,427,361.18
  5. Step 5: Solve for x
    x = 46,097,427,361.18/245,155.46
  6. Step 6: Final answer
    x = 188,033.45

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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.