Home / 430,497.56-645,746.88-205,805.18

Finding the Fourth Proportional to 430,497.56, 645,746.88 and 205,805.18

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Solution

The fourth proportional to 430,497.56, 645,746.88 and 205,805.18 is: 308,708.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,497.56 : 645,746.88 = 205,805.18 : x
  2. Step 2: Convert to fraction form
    430,497.56/645,746.88 = 205,805.18/x
  3. Step 3: Cross multiply
    430,497.56x = 645,746.88 × 205,805.18
  4. Step 4: Simplify right side
    430,497.56x = 132,898,052,872.84
  5. Step 5: Solve for x
    x = 132,898,052,872.84/430,497.56
  6. Step 6: Final answer
    x = 308,708.03

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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.