Home / 319,198,390.67-440,493,580.16-172,520,674.67

Finding the Fourth Proportional to 319,198,390.67, 440,493,580.16 and 172,520,674.67

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Solution

The fourth proportional to 319,198,390.67, 440,493,580.16 and 172,520,674.67 is: 238,078,423.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,198,390.67 : 440,493,580.16 = 172,520,674.67 : x
  2. Step 2: Convert to fraction form
    319,198,390.67/440,493,580.16 = 172,520,674.67/x
  3. Step 3: Cross multiply
    319,198,390.67x = 440,493,580.16 × 172,520,674.67
  4. Step 4: Simplify right side
    319,198,390.67x = 75,994,249,637,006,928
  5. Step 5: Solve for x
    x = 75,994,249,637,006,928/319,198,390.67
  6. Step 6: Final answer
    x = 238,078,423.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.