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Finding the Fourth Proportional to 219,423.45, 302,802.63 and 118,821.45

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Solution

The fourth proportional to 219,423.45, 302,802.63 and 118,821.45 is: 163,972.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,423.45 : 302,802.63 = 118,821.45 : x
  2. Step 2: Convert to fraction form
    219,423.45/302,802.63 = 118,821.45/x
  3. Step 3: Cross multiply
    219,423.45x = 302,802.63 × 118,821.45
  4. Step 4: Simplify right side
    219,423.45x = 35,979,447,560.41
  5. Step 5: Solve for x
    x = 35,979,447,560.41/219,423.45
  6. Step 6: Final answer
    x = 163,972.66

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1.5x scale

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.