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Finding the Fourth Proportional to 551,603.59, 761,208.43 and 309,881.07

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Solution

The fourth proportional to 551,603.59, 761,208.43 and 309,881.07 is: 427,633.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,603.59 : 761,208.43 = 309,881.07 : x
  2. Step 2: Convert to fraction form
    551,603.59/761,208.43 = 309,881.07/x
  3. Step 3: Cross multiply
    551,603.59x = 761,208.43 × 309,881.07
  4. Step 4: Simplify right side
    551,603.59x = 235,884,082,781.42
  5. Step 5: Solve for x
    x = 235,884,082,781.42/551,603.59
  6. Step 6: Final answer
    x = 427,633.33

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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.