Home / 430,133.22-645,158.12-130,616.39

Finding the Fourth Proportional to 430,133.22, 645,158.12 and 130,616.39

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Solution

The fourth proportional to 430,133.22, 645,158.12 and 130,616.39 is: 195,911.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,133.22 : 645,158.12 = 130,616.39 : x
  2. Step 2: Convert to fraction form
    430,133.22/645,158.12 = 130,616.39/x
  3. Step 3: Cross multiply
    430,133.22x = 645,158.12 × 130,616.39
  4. Step 4: Simplify right side
    430,133.22x = 84,268,225,573.40
  5. Step 5: Solve for x
    x = 84,268,225,573.40/430,133.22
  6. Step 6: Final answer
    x = 195,911.92

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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.