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Finding the Fourth Proportional to 239,305.78, 330,237.70 and 130,411.06

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Solution

The fourth proportional to 239,305.78, 330,237.70 and 130,411.06 is: 179,964.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,305.78 : 330,237.70 = 130,411.06 : x
  2. Step 2: Convert to fraction form
    239,305.78/330,237.70 = 130,411.06/x
  3. Step 3: Cross multiply
    239,305.78x = 330,237.70 × 130,411.06
  4. Step 4: Simplify right side
    239,305.78x = 43,066,648,508.96
  5. Step 5: Solve for x
    x = 43,066,648,508.96/239,305.78
  6. Step 6: Final answer
    x = 179,964.93

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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.