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Finding the Fourth Proportional to 218,956.61, 302,159.98 and 118,354.61

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Solution

The fourth proportional to 218,956.61, 302,159.98 and 118,354.61 is: 163,329.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,956.61 : 302,159.98 = 118,354.61 : x
  2. Step 2: Convert to fraction form
    218,956.61/302,159.98 = 118,354.61/x
  3. Step 3: Cross multiply
    218,956.61x = 302,159.98 × 118,354.61
  4. Step 4: Simplify right side
    218,956.61x = 35,762,025,227.65
  5. Step 5: Solve for x
    x = 35,762,025,227.65/218,956.61
  6. Step 6: Final answer
    x = 163,329.28

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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.