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Finding the Fourth Proportional to 373,678.35, 515,692.54 and 210,345.39

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Solution

The fourth proportional to 373,678.35, 515,692.54 and 210,345.39 is: 290,285.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,678.35 : 515,692.54 = 210,345.39 : x
  2. Step 2: Convert to fraction form
    373,678.35/515,692.54 = 210,345.39/x
  3. Step 3: Cross multiply
    373,678.35x = 515,692.54 × 210,345.39
  4. Step 4: Simplify right side
    373,678.35x = 108,473,549,854.37
  5. Step 5: Solve for x
    x = 108,473,549,854.37/373,678.35
  6. Step 6: Final answer
    x = 290,285.89

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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.