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Finding the Fourth Proportional to 239,417.86, 330,393.99 and 137,445.76

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Solution

The fourth proportional to 239,417.86, 330,393.99 and 137,445.76 is: 189,673.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,417.86 : 330,393.99 = 137,445.76 : x
  2. Step 2: Convert to fraction form
    239,417.86/330,393.99 = 137,445.76/x
  3. Step 3: Cross multiply
    239,417.86x = 330,393.99 × 137,445.76
  4. Step 4: Simplify right side
    239,417.86x = 45,411,253,054.98
  5. Step 5: Solve for x
    x = 45,411,253,054.98/239,417.86
  6. Step 6: Final answer
    x = 189,673.62

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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.