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Finding the Fourth Proportional to 451,645.61, 623,249.84 and 260,720.51

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Solution

The fourth proportional to 451,645.61, 623,249.84 and 260,720.51 is: 359,782.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,645.61 : 623,249.84 = 260,720.51 : x
  2. Step 2: Convert to fraction form
    451,645.61/623,249.84 = 260,720.51/x
  3. Step 3: Cross multiply
    451,645.61x = 623,249.84 × 260,720.51
  4. Step 4: Simplify right side
    451,645.61x = 162,494,013,677.77
  5. Step 5: Solve for x
    x = 162,494,013,677.77/451,645.61
  6. Step 6: Final answer
    x = 359,782.12

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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.