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Finding the Fourth Proportional to 493,347.40, 740,021.10 and 138,421.60

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Solution

The fourth proportional to 493,347.40, 740,021.10 and 138,421.60 is: 207,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,347.40 : 740,021.10 = 138,421.60 : x
  2. Step 2: Convert to fraction form
    493,347.40/740,021.10 = 138,421.60/x
  3. Step 3: Cross multiply
    493,347.40x = 740,021.10 × 138,421.60
  4. Step 4: Simplify right side
    493,347.40x = 102,434,904,695.76
  5. Step 5: Solve for x
    x = 102,434,904,695.76/493,347.40
  6. Step 6: Final answer
    x = 207,632.40

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