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Finding the Fourth Proportional to 255,800.40, 384,046.20 and 162,488.40

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Solution

The fourth proportional to 255,800.40, 384,046.20 and 162,488.40 is: 243,952.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,800.40 : 384,046.20 = 162,488.40 : x
  2. Step 2: Convert to fraction form
    255,800.40/384,046.20 = 162,488.40/x
  3. Step 3: Cross multiply
    255,800.40x = 384,046.20 × 162,488.40
  4. Step 4: Simplify right side
    255,800.40x = 62,403,052,564.08
  5. Step 5: Solve for x
    x = 62,403,052,564.08/255,800.40
  6. Step 6: Final answer
    x = 243,952.13

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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.