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Finding the Fourth Proportional to 346,979.20, 520,468.80 and 110,345.80

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Solution

The fourth proportional to 346,979.20, 520,468.80 and 110,345.80 is: 165,518.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,979.20 : 520,468.80 = 110,345.80 : x
  2. Step 2: Convert to fraction form
    346,979.20/520,468.80 = 110,345.80/x
  3. Step 3: Cross multiply
    346,979.20x = 520,468.80 × 110,345.80
  4. Step 4: Simplify right side
    346,979.20x = 57,431,546,111.04
  5. Step 5: Solve for x
    x = 57,431,546,111.04/346,979.20
  6. Step 6: Final answer
    x = 165,518.70

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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.