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Finding the Fourth Proportional to 326,323.60, 489,485.40 and 201,907.60

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Solution

The fourth proportional to 326,323.60, 489,485.40 and 201,907.60 is: 302,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,323.60 : 489,485.40 = 201,907.60 : x
  2. Step 2: Convert to fraction form
    326,323.60/489,485.40 = 201,907.60/x
  3. Step 3: Cross multiply
    326,323.60x = 489,485.40 × 201,907.60
  4. Step 4: Simplify right side
    326,323.60x = 98,830,822,349.04
  5. Step 5: Solve for x
    x = 98,830,822,349.04/326,323.60
  6. Step 6: Final answer
    x = 302,861.40

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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.