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Finding the Fourth Proportional to 387,664.32, 535,275.36 and 312,548.16

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Solution

The fourth proportional to 387,664.32, 535,275.36 and 312,548.16 is: 431,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,664.32 : 535,275.36 = 312,548.16 : x
  2. Step 2: Convert to fraction form
    387,664.32/535,275.36 = 312,548.16/x
  3. Step 3: Cross multiply
    387,664.32x = 535,275.36 × 312,548.16
  4. Step 4: Simplify right side
    387,664.32x = 167,299,328,861.34
  5. Step 5: Solve for x
    x = 167,299,328,861.34/387,664.32
  6. Step 6: Final answer
    x = 431,557.20

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