Home / 430,317.16-644,885.22-272,262.67

Finding the Fourth Proportional to 430,317.16, 644,885.22 and 272,262.67

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Solution

The fourth proportional to 430,317.16, 644,885.22 and 272,262.67 is: 408,020.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,317.16 : 644,885.22 = 272,262.67 : x
  2. Step 2: Convert to fraction form
    430,317.16/644,885.22 = 272,262.67/x
  3. Step 3: Cross multiply
    430,317.16x = 644,885.22 × 272,262.67
  4. Step 4: Simplify right side
    430,317.16x = 175,578,171,840.74
  5. Step 5: Solve for x
    x = 175,578,171,840.74/430,317.16
  6. Step 6: Final answer
    x = 408,020.38

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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.