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Finding the Fourth Proportional to 319,323.07, 440,662.61 and 174,128.50

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Solution

The fourth proportional to 319,323.07, 440,662.61 and 174,128.50 is: 240,295.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,323.07 : 440,662.61 = 174,128.50 : x
  2. Step 2: Convert to fraction form
    319,323.07/440,662.61 = 174,128.50/x
  3. Step 3: Cross multiply
    319,323.07x = 440,662.61 × 174,128.50
  4. Step 4: Simplify right side
    319,323.07x = 76,731,918,619.05
  5. Step 5: Solve for x
    x = 76,731,918,619.05/319,323.07
  6. Step 6: Final answer
    x = 240,295.57

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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.