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Finding the Fourth Proportional to 265,810.49, 398,661.35 and 76,220.06

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Solution

The fourth proportional to 265,810.49, 398,661.35 and 76,220.06 is: 114,314.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,810.49 : 398,661.35 = 76,220.06 : x
  2. Step 2: Convert to fraction form
    265,810.49/398,661.35 = 76,220.06/x
  3. Step 3: Cross multiply
    265,810.49x = 398,661.35 × 76,220.06
  4. Step 4: Simplify right side
    265,810.49x = 30,385,989,642.27
  5. Step 5: Solve for x
    x = 30,385,989,642.27/265,810.49
  6. Step 6: Final answer
    x = 114,314.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.