Home / 430,271.46-645,447.74-126,665.84

Finding the Fourth Proportional to 430,271.46, 645,447.74 and 126,665.84

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Solution

The fourth proportional to 430,271.46, 645,447.74 and 126,665.84 is: 190,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,271.46 : 645,447.74 = 126,665.84 : x
  2. Step 2: Convert to fraction form
    430,271.46/645,447.74 = 126,665.84/x
  3. Step 3: Cross multiply
    430,271.46x = 645,447.74 × 126,665.84
  4. Step 4: Simplify right side
    430,271.46x = 81,756,181,143.49
  5. Step 5: Solve for x
    x = 81,756,181,143.49/430,271.46
  6. Step 6: Final answer
    x = 190,010.70

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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.