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Finding the Fourth Proportional to 530,579.08, 732,213.30 and 288,871.84

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Solution

The fourth proportional to 530,579.08, 732,213.30 and 288,871.84 is: 398,650.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    530,579.08 : 732,213.30 = 288,871.84 : x
  2. Step 2: Convert to fraction form
    530,579.08/732,213.30 = 288,871.84/x
  3. Step 3: Cross multiply
    530,579.08x = 732,213.30 × 288,871.84
  4. Step 4: Simplify right side
    530,579.08x = 211,515,803,243.47
  5. Step 5: Solve for x
    x = 211,515,803,243.47/530,579.08
  6. Step 6: Final answer
    x = 398,650.85

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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.