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Finding the Fourth Proportional to 219,394, 302,756.43 and 122,603.86

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Solution

The fourth proportional to 219,394, 302,756.43 and 122,603.86 is: 169,189.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,394 : 302,756.43 = 122,603.86 : x
  2. Step 2: Convert to fraction form
    219,394/302,756.43 = 122,603.86/x
  3. Step 3: Cross multiply
    219,394x = 302,756.43 × 122,603.86
  4. Step 4: Simplify right side
    219,394x = 37,119,106,957.82
  5. Step 5: Solve for x
    x = 37,119,106,957.82/219,394
  6. Step 6: Final answer
    x = 169,189.25

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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.