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Finding the Fourth Proportional to 469,925.69, 648,498.10 and 255,065.79

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Solution

The fourth proportional to 469,925.69, 648,498.10 and 255,065.79 is: 351,991.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,925.69 : 648,498.10 = 255,065.79 : x
  2. Step 2: Convert to fraction form
    469,925.69/648,498.10 = 255,065.79/x
  3. Step 3: Cross multiply
    469,925.69x = 648,498.10 × 255,065.79
  4. Step 4: Simplify right side
    469,925.69x = 165,409,682,462.45
  5. Step 5: Solve for x
    x = 165,409,682,462.45/469,925.69
  6. Step 6: Final answer
    x = 351,991.15

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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.