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Finding the Fourth Proportional to 319,389, 478,086.99 and 235,244.16

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Solution

The fourth proportional to 319,389, 478,086.99 and 235,244.16 is: 352,132.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,389 : 478,086.99 = 235,244.16 : x
  2. Step 2: Convert to fraction form
    319,389/478,086.99 = 235,244.16/x
  3. Step 3: Cross multiply
    319,389x = 478,086.99 × 235,244.16
  4. Step 4: Simplify right side
    319,389x = 112,467,172,369.48
  5. Step 5: Solve for x
    x = 112,467,172,369.48/319,389
  6. Step 6: Final answer
    x = 352,132.27

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1.5x scale

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.