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Finding the Fourth Proportional to 286,516.94, 429,627.74 and 128,610.04

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Solution

The fourth proportional to 286,516.94, 429,627.74 and 128,610.04 is: 192,848.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,516.94 : 429,627.74 = 128,610.04 : x
  2. Step 2: Convert to fraction form
    286,516.94/429,627.74 = 128,610.04/x
  3. Step 3: Cross multiply
    286,516.94x = 429,627.74 × 128,610.04
  4. Step 4: Simplify right side
    286,516.94x = 55,254,440,826.51
  5. Step 5: Solve for x
    x = 55,254,440,826.51/286,516.94
  6. Step 6: Final answer
    x = 192,848.77

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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.