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Finding the Fourth Proportional to 228,292.98, 315,038.25 and 126,315.78

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Solution

The fourth proportional to 228,292.98, 315,038.25 and 126,315.78 is: 174,312.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,292.98 : 315,038.25 = 126,315.78 : x
  2. Step 2: Convert to fraction form
    228,292.98/315,038.25 = 126,315.78/x
  3. Step 3: Cross multiply
    228,292.98x = 315,038.25 × 126,315.78
  4. Step 4: Simplify right side
    228,292.98x = 39,794,302,278.59
  5. Step 5: Solve for x
    x = 39,794,302,278.59/228,292.98
  6. Step 6: Final answer
    x = 174,312.42

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1.5x scale

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.