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Finding the Fourth Proportional to 393,353.04, 590,467.20 and 203,762.80

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Solution

The fourth proportional to 393,353.04, 590,467.20 and 203,762.80 is: 305,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,353.04 : 590,467.20 = 203,762.80 : x
  2. Step 2: Convert to fraction form
    393,353.04/590,467.20 = 203,762.80/x
  3. Step 3: Cross multiply
    393,353.04x = 590,467.20 × 203,762.80
  4. Step 4: Simplify right side
    393,353.04x = 120,315,249,980.16
  5. Step 5: Solve for x
    x = 120,315,249,980.16/393,353.04
  6. Step 6: Final answer
    x = 305,870.90

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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.