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Finding the Fourth Proportional to 239,419.99, 330,429.50 and 137,477.35

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Solution

The fourth proportional to 239,419.99, 330,429.50 and 137,477.35 is: 189,735.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,419.99 : 330,429.50 = 137,477.35 : x
  2. Step 2: Convert to fraction form
    239,419.99/330,429.50 = 137,477.35/x
  3. Step 3: Cross multiply
    239,419.99x = 330,429.50 × 137,477.35
  4. Step 4: Simplify right side
    239,419.99x = 45,426,572,021.83
  5. Step 5: Solve for x
    x = 45,426,572,021.83/239,419.99
  6. Step 6: Final answer
    x = 189,735.92

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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.