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Finding the Fourth Proportional to 265,557.88, 398,399.08 and 105,642.92

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Solution

The fourth proportional to 265,557.88, 398,399.08 and 105,642.92 is: 158,489.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,557.88 : 398,399.08 = 105,642.92 : x
  2. Step 2: Convert to fraction form
    265,557.88/398,399.08 = 105,642.92/x
  3. Step 3: Cross multiply
    265,557.88x = 398,399.08 × 105,642.92
  4. Step 4: Simplify right side
    265,557.88x = 42,088,042,136.51
  5. Step 5: Solve for x
    x = 42,088,042,136.51/265,557.88
  6. Step 6: Final answer
    x = 158,489.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.