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Finding the Fourth Proportional to 319,104.54, 440,477.05 and 285,053.89

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Solution

The fourth proportional to 319,104.54, 440,477.05 and 285,053.89 is: 393,475.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,104.54 : 440,477.05 = 285,053.89 : x
  2. Step 2: Convert to fraction form
    319,104.54/440,477.05 = 285,053.89/x
  3. Step 3: Cross multiply
    319,104.54x = 440,477.05 × 285,053.89
  4. Step 4: Simplify right side
    319,104.54x = 125,559,696,558.23
  5. Step 5: Solve for x
    x = 125,559,696,558.23/319,104.54
  6. Step 6: Final answer
    x = 393,475.12

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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.