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Finding the Fourth Proportional to 268,395.50, 370,385.79 and 155,225.54

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Solution

The fourth proportional to 268,395.50, 370,385.79 and 155,225.54 is: 214,211.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,395.50 : 370,385.79 = 155,225.54 : x
  2. Step 2: Convert to fraction form
    268,395.50/370,385.79 = 155,225.54/x
  3. Step 3: Cross multiply
    268,395.50x = 370,385.79 × 155,225.54
  4. Step 4: Simplify right side
    268,395.50x = 57,493,334,261.08
  5. Step 5: Solve for x
    x = 57,493,334,261.08/268,395.50
  6. Step 6: Final answer
    x = 214,211.25

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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.