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Finding the Fourth Proportional to 356,667.20, 535,000.80 and 119,931.20

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Solution

The fourth proportional to 356,667.20, 535,000.80 and 119,931.20 is: 179,896.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,667.20 : 535,000.80 = 119,931.20 : x
  2. Step 2: Convert to fraction form
    356,667.20/535,000.80 = 119,931.20/x
  3. Step 3: Cross multiply
    356,667.20x = 535,000.80 × 119,931.20
  4. Step 4: Simplify right side
    356,667.20x = 64,163,287,944.96
  5. Step 5: Solve for x
    x = 64,163,287,944.96/356,667.20
  6. Step 6: Final answer
    x = 179,896.80

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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.