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Finding the Fourth Proportional to 228,323.40, 342,485.10 and 221,762.40

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Solution

The fourth proportional to 228,323.40, 342,485.10 and 221,762.40 is: 332,643.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,323.40 : 342,485.10 = 221,762.40 : x
  2. Step 2: Convert to fraction form
    228,323.40/342,485.10 = 221,762.40/x
  3. Step 3: Cross multiply
    228,323.40x = 342,485.10 × 221,762.40
  4. Step 4: Simplify right side
    228,323.40x = 75,950,317,740.24
  5. Step 5: Solve for x
    x = 75,950,317,740.24/228,323.40
  6. Step 6: Final answer
    x = 332,643.60

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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.