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Finding the Fourth Proportional to 303,345.63, 455,071.83 and 103,619.20

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Solution

The fourth proportional to 303,345.63, 455,071.83 and 103,619.20 is: 155,447.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,345.63 : 455,071.83 = 103,619.20 : x
  2. Step 2: Convert to fraction form
    303,345.63/455,071.83 = 103,619.20/x
  3. Step 3: Cross multiply
    303,345.63x = 455,071.83 × 103,619.20
  4. Step 4: Simplify right side
    303,345.63x = 47,154,178,967.14
  5. Step 5: Solve for x
    x = 47,154,178,967.14/303,345.63
  6. Step 6: Final answer
    x = 155,447.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.