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Finding the Fourth Proportional to 386,004.42, 578,809.17 and 161,303.52

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Solution

The fourth proportional to 386,004.42, 578,809.17 and 161,303.52 is: 241,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,004.42 : 578,809.17 = 161,303.52 : x
  2. Step 2: Convert to fraction form
    386,004.42/578,809.17 = 161,303.52/x
  3. Step 3: Cross multiply
    386,004.42x = 578,809.17 × 161,303.52
  4. Step 4: Simplify right side
    386,004.42x = 93,363,956,529.28
  5. Step 5: Solve for x
    x = 93,363,956,529.28/386,004.42
  6. Step 6: Final answer
    x = 241,872.77

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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.