Home / 286,811.04-430,216.36-87,130.64

Finding the Fourth Proportional to 286,811.04, 430,216.36 and 87,130.64

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Solution

The fourth proportional to 286,811.04, 430,216.36 and 87,130.64 is: 130,695.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,811.04 : 430,216.36 = 87,130.64 : x
  2. Step 2: Convert to fraction form
    286,811.04/430,216.36 = 87,130.64/x
  3. Step 3: Cross multiply
    286,811.04x = 430,216.36 × 87,130.64
  4. Step 4: Simplify right side
    286,811.04x = 37,485,026,785.27
  5. Step 5: Solve for x
    x = 37,485,026,785.27/286,811.04
  6. Step 6: Final answer
    x = 130,695.90

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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.