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Finding the Fourth Proportional to 388,735.20, 536,498.14 and 216,668.87

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Solution

The fourth proportional to 388,735.20, 536,498.14 and 216,668.87 is: 299,027.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,735.20 : 536,498.14 = 216,668.87 : x
  2. Step 2: Convert to fraction form
    388,735.20/536,498.14 = 216,668.87/x
  3. Step 3: Cross multiply
    388,735.20x = 536,498.14 × 216,668.87
  4. Step 4: Simplify right side
    388,735.20x = 116,242,443,068.41
  5. Step 5: Solve for x
    x = 116,242,443,068.41/388,735.20
  6. Step 6: Final answer
    x = 299,027.32

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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.