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Finding the Fourth Proportional to 239,457.95, 330,454.56 and 130,561.39

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Solution

The fourth proportional to 239,457.95, 330,454.56 and 130,561.39 is: 180,176.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,457.95 : 330,454.56 = 130,561.39 : x
  2. Step 2: Convert to fraction form
    239,457.95/330,454.56 = 130,561.39/x
  3. Step 3: Cross multiply
    239,457.95x = 330,454.56 × 130,561.39
  4. Step 4: Simplify right side
    239,457.95x = 43,144,606,685.44
  5. Step 5: Solve for x
    x = 43,144,606,685.44/239,457.95
  6. Step 6: Final answer
    x = 180,176.13

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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.