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Finding the Fourth Proportional to 302,365.45, 453,712.20 and 124,890.40

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Solution

The fourth proportional to 302,365.45, 453,712.20 and 124,890.40 is: 187,403.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,365.45 : 453,712.20 = 124,890.40 : x
  2. Step 2: Convert to fraction form
    302,365.45/453,712.20 = 124,890.40/x
  3. Step 3: Cross multiply
    302,365.45x = 453,712.20 × 124,890.40
  4. Step 4: Simplify right side
    302,365.45x = 56,664,298,142.88
  5. Step 5: Solve for x
    x = 56,664,298,142.88/302,365.45
  6. Step 6: Final answer
    x = 187,403.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.