Home / 209,014,331.11-288,172,018.65-171,198,182.57

Finding the Fourth Proportional to 209,014,331.11, 288,172,018.65 and 171,198,182.57

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Solution

The fourth proportional to 209,014,331.11, 288,172,018.65 and 171,198,182.57 is: 236,034,178.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,014,331.11 : 288,172,018.65 = 171,198,182.57 : x
  2. Step 2: Convert to fraction form
    209,014,331.11/288,172,018.65 = 171,198,182.57/x
  3. Step 3: Cross multiply
    209,014,331.11x = 288,172,018.65 × 171,198,182.57
  4. Step 4: Simplify right side
    209,014,331.11x = 49,334,525,860,408,136
  5. Step 5: Solve for x
    x = 49,334,525,860,408,136/209,014,331.11
  6. Step 6: Final answer
    x = 236,034,178.13

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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.