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Finding the Fourth Proportional to 405,292.80, 608,158.08 and 168,798.72

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Solution

The fourth proportional to 405,292.80, 608,158.08 and 168,798.72 is: 253,289.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,292.80 : 608,158.08 = 168,798.72 : x
  2. Step 2: Convert to fraction form
    405,292.80/608,158.08 = 168,798.72/x
  3. Step 3: Cross multiply
    405,292.80x = 608,158.08 × 168,798.72
  4. Step 4: Simplify right side
    405,292.80x = 102,656,305,461.66
  5. Step 5: Solve for x
    x = 102,656,305,461.66/405,292.80
  6. Step 6: Final answer
    x = 253,289.24

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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.