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Finding the Fourth Proportional to 254,004.81, 380,740.47 and 85,466.63

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Solution

The fourth proportional to 254,004.81, 380,740.47 and 85,466.63 is: 128,110.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,004.81 : 380,740.47 = 85,466.63 : x
  2. Step 2: Convert to fraction form
    254,004.81/380,740.47 = 85,466.63/x
  3. Step 3: Cross multiply
    254,004.81x = 380,740.47 × 85,466.63
  4. Step 4: Simplify right side
    254,004.81x = 32,540,602,971.81
  5. Step 5: Solve for x
    x = 32,540,602,971.81/254,004.81
  6. Step 6: Final answer
    x = 128,110.18

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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.