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Finding the Fourth Proportional to 518,268.51, 715,234.89 and 303,477.77

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Solution

The fourth proportional to 518,268.51, 715,234.89 and 303,477.77 is: 418,813.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,268.51 : 715,234.89 = 303,477.77 : x
  2. Step 2: Convert to fraction form
    518,268.51/715,234.89 = 303,477.77/x
  3. Step 3: Cross multiply
    518,268.51x = 715,234.89 × 303,477.77
  4. Step 4: Simplify right side
    518,268.51x = 217,057,892,369.52
  5. Step 5: Solve for x
    x = 217,057,892,369.52/518,268.51
  6. Step 6: Final answer
    x = 418,813.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.