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Finding the Fourth Proportional to 219,480, 302,882.40 and 118,878

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Solution

The fourth proportional to 219,480, 302,882.40 and 118,878 is: 164,051.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,480 : 302,882.40 = 118,878 : x
  2. Step 2: Convert to fraction form
    219,480/302,882.40 = 118,878/x
  3. Step 3: Cross multiply
    219,480x = 302,882.40 × 118,878
  4. Step 4: Simplify right side
    219,480x = 36,006,053,947.20
  5. Step 5: Solve for x
    x = 36,006,053,947.20/219,480
  6. Step 6: Final answer
    x = 164,051.64

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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.