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Finding the Fourth Proportional to 255,086.60, 382,613.70 and 86,606.60

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Solution

The fourth proportional to 255,086.60, 382,613.70 and 86,606.60 is: 129,904.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,086.60 : 382,613.70 = 86,606.60 : x
  2. Step 2: Convert to fraction form
    255,086.60/382,613.70 = 86,606.60/x
  3. Step 3: Cross multiply
    255,086.60x = 382,613.70 × 86,606.60
  4. Step 4: Simplify right side
    255,086.60x = 33,136,871,670.42
  5. Step 5: Solve for x
    x = 33,136,871,670.42/255,086.60
  6. Step 6: Final answer
    x = 129,904.40

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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.