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Finding the Fourth Proportional to 356,798.80, 492,405.12 and 235,727.68

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Solution

The fourth proportional to 356,798.80, 492,405.12 and 235,727.68 is: 325,319.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,798.80 : 492,405.12 = 235,727.68 : x
  2. Step 2: Convert to fraction form
    356,798.80/492,405.12 = 235,727.68/x
  3. Step 3: Cross multiply
    356,798.80x = 492,405.12 × 235,727.68
  4. Step 4: Simplify right side
    356,798.80x = 116,073,516,557.72
  5. Step 5: Solve for x
    x = 116,073,516,557.72/356,798.80
  6. Step 6: Final answer
    x = 325,319.25

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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.