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Finding the Fourth Proportional to 389,242.42, 583,860.08 and 123,002.90

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Solution

The fourth proportional to 389,242.42, 583,860.08 and 123,002.90 is: 184,503.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,242.42 : 583,860.08 = 123,002.90 : x
  2. Step 2: Convert to fraction form
    389,242.42/583,860.08 = 123,002.90/x
  3. Step 3: Cross multiply
    389,242.42x = 583,860.08 × 123,002.90
  4. Step 4: Simplify right side
    389,242.42x = 71,816,483,034.23
  5. Step 5: Solve for x
    x = 71,816,483,034.23/389,242.42
  6. Step 6: Final answer
    x = 184,503.23

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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.