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Finding the Fourth Proportional to 328,647.88, 492,984.12 and 91,984.41

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Solution

The fourth proportional to 328,647.88, 492,984.12 and 91,984.41 is: 137,980.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,647.88 : 492,984.12 = 91,984.41 : x
  2. Step 2: Convert to fraction form
    328,647.88/492,984.12 = 91,984.41/x
  3. Step 3: Cross multiply
    328,647.88x = 492,984.12 × 91,984.41
  4. Step 4: Simplify right side
    328,647.88x = 45,346,853,762.51
  5. Step 5: Solve for x
    x = 45,346,853,762.51/328,647.88
  6. Step 6: Final answer
    x = 137,980.06

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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.