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Finding the Fourth Proportional to 239,688.88, 330,785.76 and 137,746.96

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Solution

The fourth proportional to 239,688.88, 330,785.76 and 137,746.96 is: 190,099.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,688.88 : 330,785.76 = 137,746.96 : x
  2. Step 2: Convert to fraction form
    239,688.88/330,785.76 = 137,746.96/x
  3. Step 3: Cross multiply
    239,688.88x = 330,785.76 × 137,746.96
  4. Step 4: Simplify right side
    239,688.88x = 45,564,732,851.29
  5. Step 5: Solve for x
    x = 45,564,732,851.29/239,688.88
  6. Step 6: Final answer
    x = 190,099.49

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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.