Home / 430,395.03-645,315.57-205,750.44

Finding the Fourth Proportional to 430,395.03, 645,315.57 and 205,750.44

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Solution

The fourth proportional to 430,395.03, 645,315.57 and 205,750.44 is: 308,493.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,395.03 : 645,315.57 = 205,750.44 : x
  2. Step 2: Convert to fraction form
    430,395.03/645,315.57 = 205,750.44/x
  3. Step 3: Cross multiply
    430,395.03x = 645,315.57 × 205,750.44
  4. Step 4: Simplify right side
    430,395.03x = 132,773,962,466.35
  5. Step 5: Solve for x
    x = 132,773,962,466.35/430,395.03
  6. Step 6: Final answer
    x = 308,493.25

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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.