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Finding the Fourth Proportional to 375,559, 518,271.42 and 216,583

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Solution

The fourth proportional to 375,559, 518,271.42 and 216,583 is: 298,884.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    375,559 : 518,271.42 = 216,583 : x
  2. Step 2: Convert to fraction form
    375,559/518,271.42 = 216,583/x
  3. Step 3: Cross multiply
    375,559x = 518,271.42 × 216,583
  4. Step 4: Simplify right side
    375,559x = 112,248,778,957.86
  5. Step 5: Solve for x
    x = 112,248,778,957.86/375,559
  6. Step 6: Final answer
    x = 298,884.54

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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.