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Finding the Fourth Proportional to 286,765.55, 430,149.02 and 87,087.45

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Solution

The fourth proportional to 286,765.55, 430,149.02 and 87,087.45 is: 130,631.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,765.55 : 430,149.02 = 87,087.45 : x
  2. Step 2: Convert to fraction form
    286,765.55/430,149.02 = 87,087.45/x
  3. Step 3: Cross multiply
    286,765.55x = 430,149.02 × 87,087.45
  4. Step 4: Simplify right side
    286,765.55x = 37,460,580,836.36
  5. Step 5: Solve for x
    x = 37,460,580,836.36/286,765.55
  6. Step 6: Final answer
    x = 130,631.39

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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.