Home / 430,468.43-645,703.25-205,776.05

Finding the Fourth Proportional to 430,468.43, 645,703.25 and 205,776.05

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Solution

The fourth proportional to 430,468.43, 645,703.25 and 205,776.05 is: 308,664.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,468.43 : 645,703.25 = 205,776.05 : x
  2. Step 2: Convert to fraction form
    430,468.43/645,703.25 = 205,776.05/x
  3. Step 3: Cross multiply
    430,468.43x = 645,703.25 × 205,776.05
  4. Step 4: Simplify right side
    430,468.43x = 132,870,259,999.77
  5. Step 5: Solve for x
    x = 132,870,259,999.77/430,468.43
  6. Step 6: Final answer
    x = 308,664.36

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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.