Home / 430,130.22-645,153.61-130,613.39

Finding the Fourth Proportional to 430,130.22, 645,153.61 and 130,613.39

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Solution

The fourth proportional to 430,130.22, 645,153.61 and 130,613.39 is: 195,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,130.22 : 645,153.61 = 130,613.39 : x
  2. Step 2: Convert to fraction form
    430,130.22/645,153.61 = 130,613.39/x
  3. Step 3: Cross multiply
    430,130.22x = 645,153.61 × 130,613.39
  4. Step 4: Simplify right side
    430,130.22x = 84,265,700,072.84
  5. Step 5: Solve for x
    x = 84,265,700,072.84/430,130.22
  6. Step 6: Final answer
    x = 195,907.42

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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.