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Finding the Fourth Proportional to 255,210.80, 382,734.57 and 84,400.79

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Solution

The fourth proportional to 255,210.80, 382,734.57 and 84,400.79 is: 126,574.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,210.80 : 382,734.57 = 84,400.79 : x
  2. Step 2: Convert to fraction form
    255,210.80/382,734.57 = 84,400.79/x
  3. Step 3: Cross multiply
    255,210.80x = 382,734.57 × 84,400.79
  4. Step 4: Simplify right side
    255,210.80x = 32,303,097,996.39
  5. Step 5: Solve for x
    x = 32,303,097,996.39/255,210.80
  6. Step 6: Final answer
    x = 126,574.18

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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.