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Finding the Fourth Proportional to 288,889.74, 433,383.02 and 99,342.45

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Solution

The fourth proportional to 288,889.74, 433,383.02 and 99,342.45 is: 149,030.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,889.74 : 433,383.02 = 99,342.45 : x
  2. Step 2: Convert to fraction form
    288,889.74/433,383.02 = 99,342.45/x
  3. Step 3: Cross multiply
    288,889.74x = 433,383.02 × 99,342.45
  4. Step 4: Simplify right side
    288,889.74x = 43,053,330,995.20
  5. Step 5: Solve for x
    x = 43,053,330,995.20/288,889.74
  6. Step 6: Final answer
    x = 149,030.32

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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.