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Finding the Fourth Proportional to 272,353.40, 408,530.10 and 260,835.20

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Solution

The fourth proportional to 272,353.40, 408,530.10 and 260,835.20 is: 391,252.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,353.40 : 408,530.10 = 260,835.20 : x
  2. Step 2: Convert to fraction form
    272,353.40/408,530.10 = 260,835.20/x
  3. Step 3: Cross multiply
    272,353.40x = 408,530.10 × 260,835.20
  4. Step 4: Simplify right side
    272,353.40x = 106,559,030,339.52
  5. Step 5: Solve for x
    x = 106,559,030,339.52/272,353.40
  6. Step 6: Final answer
    x = 391,252.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.