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Finding the Fourth Proportional to 448,522.99, 672,784.45 and 307,855.15

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Solution

The fourth proportional to 448,522.99, 672,784.45 and 307,855.15 is: 461,782.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,522.99 : 672,784.45 = 307,855.15 : x
  2. Step 2: Convert to fraction form
    448,522.99/672,784.45 = 307,855.15/x
  3. Step 3: Cross multiply
    448,522.99x = 672,784.45 × 307,855.15
  4. Step 4: Simplify right side
    448,522.99x = 207,120,157,772.42
  5. Step 5: Solve for x
    x = 207,120,157,772.42/448,522.99
  6. Step 6: Final answer
    x = 461,782.70

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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.