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Finding the Fourth Proportional to 438,258.58, 604,801.20 and 257,077.78

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Solution

The fourth proportional to 438,258.58, 604,801.20 and 257,077.78 is: 354,769.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,258.58 : 604,801.20 = 257,077.78 : x
  2. Step 2: Convert to fraction form
    438,258.58/604,801.20 = 257,077.78/x
  3. Step 3: Cross multiply
    438,258.58x = 604,801.20 × 257,077.78
  4. Step 4: Simplify right side
    438,258.58x = 155,480,949,837.34
  5. Step 5: Solve for x
    x = 155,480,949,837.34/438,258.58
  6. Step 6: Final answer
    x = 354,769.89

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