Home / 430,543.56-645,815.88-205,851.18

Finding the Fourth Proportional to 430,543.56, 645,815.88 and 205,851.18

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Solution

The fourth proportional to 430,543.56, 645,815.88 and 205,851.18 is: 308,777.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,543.56 : 645,815.88 = 205,851.18 : x
  2. Step 2: Convert to fraction form
    430,543.56/645,815.88 = 205,851.18/x
  3. Step 3: Cross multiply
    430,543.56x = 645,815.88 × 205,851.18
  4. Step 4: Simplify right side
    430,543.56x = 132,941,960,960.74
  5. Step 5: Solve for x
    x = 132,941,960,960.74/430,543.56
  6. Step 6: Final answer
    x = 308,777.03

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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.