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Finding the Fourth Proportional to 219,378.30, 307,751.70 and 219,378.30

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Solution

The fourth proportional to 219,378.30, 307,751.70 and 219,378.30 is: 307,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,378.30 : 307,751.70 = 219,378.30 : x
  2. Step 2: Convert to fraction form
    219,378.30/307,751.70 = 219,378.30/x
  3. Step 3: Cross multiply
    219,378.30x = 307,751.70 × 219,378.30
  4. Step 4: Simplify right side
    219,378.30x = 67,514,044,768.11
  5. Step 5: Solve for x
    x = 67,514,044,768.11/219,378.30
  6. Step 6: Final answer
    x = 307,751.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.