Home / 219,212.75-302,513.80-123,717.40

Finding the Fourth Proportional to 219,212.75, 302,513.80 and 123,717.40

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Solution

The fourth proportional to 219,212.75, 302,513.80 and 123,717.40 is: 170,730.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,212.75 : 302,513.80 = 123,717.40 : x
  2. Step 2: Convert to fraction form
    219,212.75/302,513.80 = 123,717.40/x
  3. Step 3: Cross multiply
    219,212.75x = 302,513.80 × 123,717.40
  4. Step 4: Simplify right side
    219,212.75x = 37,426,220,800.12
  5. Step 5: Solve for x
    x = 37,426,220,800.12/219,212.75
  6. Step 6: Final answer
    x = 170,730.13

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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.