Home / 328,487.40-492,731.10-186,186.60

Finding the Fourth Proportional to 328,487.40, 492,731.10 and 186,186.60

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Solution

The fourth proportional to 328,487.40, 492,731.10 and 186,186.60 is: 279,279.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,487.40 : 492,731.10 = 186,186.60 : x
  2. Step 2: Convert to fraction form
    328,487.40/492,731.10 = 186,186.60/x
  3. Step 3: Cross multiply
    328,487.40x = 492,731.10 × 186,186.60
  4. Step 4: Simplify right side
    328,487.40x = 91,739,928,223.26
  5. Step 5: Solve for x
    x = 91,739,928,223.26/328,487.40
  6. Step 6: Final answer
    x = 279,279.90

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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.