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Finding the Fourth Proportional to 303,430.20, 455,145.30 and 103,720.65

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Solution

The fourth proportional to 303,430.20, 455,145.30 and 103,720.65 is: 155,580.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,430.20 : 455,145.30 = 103,720.65 : x
  2. Step 2: Convert to fraction form
    303,430.20/455,145.30 = 103,720.65/x
  3. Step 3: Cross multiply
    303,430.20x = 455,145.30 × 103,720.65
  4. Step 4: Simplify right side
    303,430.20x = 47,207,966,360.45
  5. Step 5: Solve for x
    x = 47,207,966,360.45/303,430.20
  6. Step 6: Final answer
    x = 155,580.98

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