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Finding the Fourth Proportional to 268,609.68, 370,660.32 and 155,440.80

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Solution

The fourth proportional to 268,609.68, 370,660.32 and 155,440.80 is: 214,496.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,609.68 : 370,660.32 = 155,440.80 : x
  2. Step 2: Convert to fraction form
    268,609.68/370,660.32 = 155,440.80/x
  3. Step 3: Cross multiply
    268,609.68x = 370,660.32 × 155,440.80
  4. Step 4: Simplify right side
    268,609.68x = 57,615,736,669.06
  5. Step 5: Solve for x
    x = 57,615,736,669.06/268,609.68
  6. Step 6: Final answer
    x = 214,496.13

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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.