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Finding the Fourth Proportional to 228,117.80, 314,790.90 and 127,515.80

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Solution

The fourth proportional to 228,117.80, 314,790.90 and 127,515.80 is: 175,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,117.80 : 314,790.90 = 127,515.80 : x
  2. Step 2: Convert to fraction form
    228,117.80/314,790.90 = 127,515.80/x
  3. Step 3: Cross multiply
    228,117.80x = 314,790.90 × 127,515.80
  4. Step 4: Simplify right side
    228,117.80x = 40,140,813,446.22
  5. Step 5: Solve for x
    x = 40,140,813,446.22/228,117.80
  6. Step 6: Final answer
    x = 175,965.28

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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.