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Finding the Fourth Proportional to 385,925.96, 578,871.12 and 105,442.40

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Solution

The fourth proportional to 385,925.96, 578,871.12 and 105,442.40 is: 158,158.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,925.96 : 578,871.12 = 105,442.40 : x
  2. Step 2: Convert to fraction form
    385,925.96/578,871.12 = 105,442.40/x
  3. Step 3: Cross multiply
    385,925.96x = 578,871.12 × 105,442.40
  4. Step 4: Simplify right side
    385,925.96x = 61,037,560,183.49
  5. Step 5: Solve for x
    x = 61,037,560,183.49/385,925.96
  6. Step 6: Final answer
    x = 158,158.73

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