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Finding the Fourth Proportional to 557,030.25, 768,699.86 and 302,379.62

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Solution

The fourth proportional to 557,030.25, 768,699.86 and 302,379.62 is: 417,282.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,030.25 : 768,699.86 = 302,379.62 : x
  2. Step 2: Convert to fraction form
    557,030.25/768,699.86 = 302,379.62/x
  3. Step 3: Cross multiply
    557,030.25x = 768,699.86 × 302,379.62
  4. Step 4: Simplify right side
    557,030.25x = 232,439,166,205.46
  5. Step 5: Solve for x
    x = 232,439,166,205.46/557,030.25
  6. Step 6: Final answer
    x = 417,282.84

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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.