Home / 254,417.39-381,670.06-85,938.94

Finding the Fourth Proportional to 254,417.39, 381,670.06 and 85,938.94

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Solution

The fourth proportional to 254,417.39, 381,670.06 and 85,938.94 is: 128,923.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,417.39 : 381,670.06 = 85,938.94 : x
  2. Step 2: Convert to fraction form
    254,417.39/381,670.06 = 85,938.94/x
  3. Step 3: Cross multiply
    254,417.39x = 381,670.06 × 85,938.94
  4. Step 4: Simplify right side
    254,417.39x = 32,800,318,477.79
  5. Step 5: Solve for x
    x = 32,800,318,477.79/254,417.39
  6. Step 6: Final answer
    x = 128,923.26

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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.