Home / 328,621.20-492,931.80-186,903.60

Finding the Fourth Proportional to 328,621.20, 492,931.80 and 186,903.60

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Solution

The fourth proportional to 328,621.20, 492,931.80 and 186,903.60 is: 280,355.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,621.20 : 492,931.80 = 186,903.60 : x
  2. Step 2: Convert to fraction form
    328,621.20/492,931.80 = 186,903.60/x
  3. Step 3: Cross multiply
    328,621.20x = 492,931.80 × 186,903.60
  4. Step 4: Simplify right side
    328,621.20x = 92,130,727,974.48
  5. Step 5: Solve for x
    x = 92,130,727,974.48/328,621.20
  6. Step 6: Final answer
    x = 280,355.40

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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.