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Finding the Fourth Proportional to 326,143.60, 489,215.40 and 201,727.60

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Solution

The fourth proportional to 326,143.60, 489,215.40 and 201,727.60 is: 302,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,143.60 : 489,215.40 = 201,727.60 : x
  2. Step 2: Convert to fraction form
    326,143.60/489,215.40 = 201,727.60/x
  3. Step 3: Cross multiply
    326,143.60x = 489,215.40 × 201,727.60
  4. Step 4: Simplify right side
    326,143.60x = 98,688,248,525.04
  5. Step 5: Solve for x
    x = 98,688,248,525.04/326,143.60
  6. Step 6: Final answer
    x = 302,591.40

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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.