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Finding the Fourth Proportional to 308,063.07, 425,711.61 and 222,303.51

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Solution

The fourth proportional to 308,063.07, 425,711.61 and 222,303.51 is: 307,200.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,063.07 : 425,711.61 = 222,303.51 : x
  2. Step 2: Convert to fraction form
    308,063.07/425,711.61 = 222,303.51/x
  3. Step 3: Cross multiply
    308,063.07x = 425,711.61 × 222,303.51
  4. Step 4: Simplify right side
    308,063.07x = 94,637,185,150.75
  5. Step 5: Solve for x
    x = 94,637,185,150.75/308,063.07
  6. Step 6: Final answer
    x = 307,200.68

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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.