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Finding the Fourth Proportional to 388,798.77, 536,542.35 and 219,032.91

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Solution

The fourth proportional to 388,798.77, 536,542.35 and 219,032.91 is: 302,265.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,798.77 : 536,542.35 = 219,032.91 : x
  2. Step 2: Convert to fraction form
    388,798.77/536,542.35 = 219,032.91/x
  3. Step 3: Cross multiply
    388,798.77x = 536,542.35 × 219,032.91
  4. Step 4: Simplify right side
    388,798.77x = 117,520,432,258.74
  5. Step 5: Solve for x
    x = 117,520,432,258.74/388,798.77
  6. Step 6: Final answer
    x = 302,265.44

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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.