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Finding the Fourth Proportional to 268,633.62, 370,673.28 and 155,434.50

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Solution

The fourth proportional to 268,633.62, 370,673.28 and 155,434.50 is: 214,475.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,633.62 : 370,673.28 = 155,434.50 : x
  2. Step 2: Convert to fraction form
    268,633.62/370,673.28 = 155,434.50/x
  3. Step 3: Cross multiply
    268,633.62x = 370,673.28 × 155,434.50
  4. Step 4: Simplify right side
    268,633.62x = 57,615,415,940.16
  5. Step 5: Solve for x
    x = 57,615,415,940.16/268,633.62
  6. Step 6: Final answer
    x = 214,475.82

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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.