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Finding the Fourth Proportional to 318,587.42, 477,881.33 and 218,444.01

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Solution

The fourth proportional to 318,587.42, 477,881.33 and 218,444.01 is: 327,666.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,587.42 : 477,881.33 = 218,444.01 : x
  2. Step 2: Convert to fraction form
    318,587.42/477,881.33 = 218,444.01/x
  3. Step 3: Cross multiply
    318,587.42x = 477,881.33 × 218,444.01
  4. Step 4: Simplify right side
    318,587.42x = 104,390,313,408.28
  5. Step 5: Solve for x
    x = 104,390,313,408.28/318,587.42
  6. Step 6: Final answer
    x = 327,666.15

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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.