Home / 430,144.93-645,218.46-130,627.79

Finding the Fourth Proportional to 430,144.93, 645,218.46 and 130,627.79

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Solution

The fourth proportional to 430,144.93, 645,218.46 and 130,627.79 is: 195,942.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,144.93 : 645,218.46 = 130,627.79 : x
  2. Step 2: Convert to fraction form
    430,144.93/645,218.46 = 130,627.79/x
  3. Step 3: Cross multiply
    430,144.93x = 645,218.46 × 130,627.79
  4. Step 4: Simplify right side
    430,144.93x = 84,283,460,690.48
  5. Step 5: Solve for x
    x = 84,283,460,690.48/430,144.93
  6. Step 6: Final answer
    x = 195,942.01

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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.