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Finding the Fourth Proportional to 268,289.25, 370,221.75 and 153,568.80

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Solution

The fourth proportional to 268,289.25, 370,221.75 and 153,568.80 is: 211,914.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,289.25 : 370,221.75 = 153,568.80 : x
  2. Step 2: Convert to fraction form
    268,289.25/370,221.75 = 153,568.80/x
  3. Step 3: Cross multiply
    268,289.25x = 370,221.75 × 153,568.80
  4. Step 4: Simplify right side
    268,289.25x = 56,854,509,881.40
  5. Step 5: Solve for x
    x = 56,854,509,881.40/268,289.25
  6. Step 6: Final answer
    x = 211,914.98

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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.