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Finding the Fourth Proportional to 328,464.83, 453,404.72 and 215,294.87

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Solution

The fourth proportional to 328,464.83, 453,404.72 and 215,294.87 is: 297,187.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,464.83 : 453,404.72 = 215,294.87 : x
  2. Step 2: Convert to fraction form
    328,464.83/453,404.72 = 215,294.87/x
  3. Step 3: Cross multiply
    328,464.83x = 453,404.72 × 215,294.87
  4. Step 4: Simplify right side
    328,464.83x = 97,615,710,249.79
  5. Step 5: Solve for x
    x = 97,615,710,249.79/328,464.83
  6. Step 6: Final answer
    x = 297,187.71

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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.