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Finding the Fourth Proportional to 239,541.87, 330,587.64 and 137,587.01

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Solution

The fourth proportional to 239,541.87, 330,587.64 and 137,587.01 is: 189,881.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,541.87 : 330,587.64 = 137,587.01 : x
  2. Step 2: Convert to fraction form
    239,541.87/330,587.64 = 137,587.01/x
  3. Step 3: Cross multiply
    239,541.87x = 330,587.64 × 137,587.01
  4. Step 4: Simplify right side
    239,541.87x = 45,484,563,471.10
  5. Step 5: Solve for x
    x = 45,484,563,471.10/239,541.87
  6. Step 6: Final answer
    x = 189,881.47

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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.