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Finding the Fourth Proportional to 477,163, 715,748.82 and 144,739

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Solution

The fourth proportional to 477,163, 715,748.82 and 144,739 is: 217,109.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,163 : 715,748.82 = 144,739 : x
  2. Step 2: Convert to fraction form
    477,163/715,748.82 = 144,739/x
  3. Step 3: Cross multiply
    477,163x = 715,748.82 × 144,739
  4. Step 4: Simplify right side
    477,163x = 103,596,768,457.98
  5. Step 5: Solve for x
    x = 103,596,768,457.98/477,163
  6. Step 6: Final answer
    x = 217,109.81

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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.