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Finding the Fourth Proportional to 268,454.40, 370,521.60 and 155,289.60

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Solution

The fourth proportional to 268,454.40, 370,521.60 and 155,289.60 is: 214,331.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,454.40 : 370,521.60 = 155,289.60 : x
  2. Step 2: Convert to fraction form
    268,454.40/370,521.60 = 155,289.60/x
  3. Step 3: Cross multiply
    268,454.40x = 370,521.60 × 155,289.60
  4. Step 4: Simplify right side
    268,454.40x = 57,538,151,055.36
  5. Step 5: Solve for x
    x = 57,538,151,055.36/268,454.40
  6. Step 6: Final answer
    x = 214,331.19

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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.