Home / 286,821.30-430,254.72-87,159.12

Finding the Fourth Proportional to 286,821.30, 430,254.72 and 87,159.12

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Solution

The fourth proportional to 286,821.30, 430,254.72 and 87,159.12 is: 130,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,821.30 : 430,254.72 = 87,159.12 : x
  2. Step 2: Convert to fraction form
    286,821.30/430,254.72 = 87,159.12/x
  3. Step 3: Cross multiply
    286,821.30x = 430,254.72 × 87,159.12
  4. Step 4: Simplify right side
    286,821.30x = 37,500,622,771.05
  5. Step 5: Solve for x
    x = 37,500,622,771.05/286,821.30
  6. Step 6: Final answer
    x = 130,745.60

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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.