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Finding the Fourth Proportional to 430,478.31, 645,696.10 and 160,585.42

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Solution

The fourth proportional to 430,478.31, 645,696.10 and 160,585.42 is: 240,870.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,478.31 : 645,696.10 = 160,585.42 : x
  2. Step 2: Convert to fraction form
    430,478.31/645,696.10 = 160,585.42/x
  3. Step 3: Cross multiply
    430,478.31x = 645,696.10 × 160,585.42
  4. Step 4: Simplify right side
    430,478.31x = 103,689,379,410.86
  5. Step 5: Solve for x
    x = 103,689,379,410.86/430,478.31
  6. Step 6: Final answer
    x = 240,870.16

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