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Finding the Fourth Proportional to 557,242.35, 769,003.38 and 315,518.46

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Solution

The fourth proportional to 557,242.35, 769,003.38 and 315,518.46 is: 435,420.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,242.35 : 769,003.38 = 315,518.46 : x
  2. Step 2: Convert to fraction form
    557,242.35/769,003.38 = 315,518.46/x
  3. Step 3: Cross multiply
    557,242.35x = 769,003.38 × 315,518.46
  4. Step 4: Simplify right side
    557,242.35x = 242,634,762,192.40
  5. Step 5: Solve for x
    x = 242,634,762,192.40/557,242.35
  6. Step 6: Final answer
    x = 435,420.54

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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.