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Finding the Fourth Proportional to 302,601.69, 452,638.31 and 212,638.05

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Solution

The fourth proportional to 302,601.69, 452,638.31 and 212,638.05 is: 318,068.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,601.69 : 452,638.31 = 212,638.05 : x
  2. Step 2: Convert to fraction form
    302,601.69/452,638.31 = 212,638.05/x
  3. Step 3: Cross multiply
    302,601.69x = 452,638.31 × 212,638.05
  4. Step 4: Simplify right side
    302,601.69x = 96,248,126,530.51
  5. Step 5: Solve for x
    x = 96,248,126,530.51/302,601.69
  6. Step 6: Final answer
    x = 318,068.70

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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.