Home / 286,939.20-430,405.24-129,056.16

Finding the Fourth Proportional to 286,939.20, 430,405.24 and 129,056.16

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Solution

The fourth proportional to 286,939.20, 430,405.24 and 129,056.16 is: 193,582.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,939.20 : 430,405.24 = 129,056.16 : x
  2. Step 2: Convert to fraction form
    286,939.20/430,405.24 = 129,056.16/x
  3. Step 3: Cross multiply
    286,939.20x = 430,405.24 × 129,056.16
  4. Step 4: Simplify right side
    286,939.20x = 55,546,447,518.28
  5. Step 5: Solve for x
    x = 55,546,447,518.28/286,939.20
  6. Step 6: Final answer
    x = 193,582.64

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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.