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Finding the Fourth Proportional to 388,016.48, 535,536.32 and 242,889.76

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Solution

The fourth proportional to 388,016.48, 535,536.32 and 242,889.76 is: 335,233.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,016.48 : 535,536.32 = 242,889.76 : x
  2. Step 2: Convert to fraction form
    388,016.48/535,536.32 = 242,889.76/x
  3. Step 3: Cross multiply
    388,016.48x = 535,536.32 × 242,889.76
  4. Step 4: Simplify right side
    388,016.48x = 130,076,288,236.08
  5. Step 5: Solve for x
    x = 130,076,288,236.08/388,016.48
  6. Step 6: Final answer
    x = 335,233.93

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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.