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Finding the Fourth Proportional to 354,341.61, 488,594.16 and 289,609.95

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Solution

The fourth proportional to 354,341.61, 488,594.16 and 289,609.95 is: 399,337.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,341.61 : 488,594.16 = 289,609.95 : x
  2. Step 2: Convert to fraction form
    354,341.61/488,594.16 = 289,609.95/x
  3. Step 3: Cross multiply
    354,341.61x = 488,594.16 × 289,609.95
  4. Step 4: Simplify right side
    354,341.61x = 141,501,730,247.89
  5. Step 5: Solve for x
    x = 141,501,730,247.89/354,341.61
  6. Step 6: Final answer
    x = 399,337.04

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