Home / 254,347.05-381,516.69-85,985.64

Finding the Fourth Proportional to 254,347.05, 381,516.69 and 85,985.64

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Solution

The fourth proportional to 254,347.05, 381,516.69 and 85,985.64 is: 128,977.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    254,347.05 : 381,516.69 = 85,985.64 : x
  2. Step 2: Convert to fraction form
    254,347.05/381,516.69 = 85,985.64/x
  3. Step 3: Cross multiply
    254,347.05x = 381,516.69 × 85,985.64
  4. Step 4: Simplify right side
    254,347.05x = 32,804,956,330.40
  5. Step 5: Solve for x
    x = 32,804,956,330.40/254,347.05
  6. Step 6: Final answer
    x = 128,977.15

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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.