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Finding the Fourth Proportional to 228,385.95, 315,169.98 and 126,411.60

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Solution

The fourth proportional to 228,385.95, 315,169.98 and 126,411.60 is: 174,446.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,385.95 : 315,169.98 = 126,411.60 : x
  2. Step 2: Convert to fraction form
    228,385.95/315,169.98 = 126,411.60/x
  3. Step 3: Cross multiply
    228,385.95x = 315,169.98 × 126,411.60
  4. Step 4: Simplify right side
    228,385.95x = 39,841,141,443.77
  5. Step 5: Solve for x
    x = 39,841,141,443.77/228,385.95
  6. Step 6: Final answer
    x = 174,446.55

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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.