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Finding the Fourth Proportional to 318,681, 439,800.78 and 184,545

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Solution

The fourth proportional to 318,681, 439,800.78 and 184,545 is: 254,684.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,681 : 439,800.78 = 184,545 : x
  2. Step 2: Convert to fraction form
    318,681/439,800.78 = 184,545/x
  3. Step 3: Cross multiply
    318,681x = 439,800.78 × 184,545
  4. Step 4: Simplify right side
    318,681x = 81,163,034,945.10
  5. Step 5: Solve for x
    x = 81,163,034,945.10/318,681
  6. Step 6: Final answer
    x = 254,684.26

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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.