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Finding the Fourth Proportional to 356,442.30, 534,762.54 and 289,717.20

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Solution

The fourth proportional to 356,442.30, 534,762.54 and 289,717.20 is: 434,656.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,442.30 : 534,762.54 = 289,717.20 : x
  2. Step 2: Convert to fraction form
    356,442.30/534,762.54 = 289,717.20/x
  3. Step 3: Cross multiply
    356,442.30x = 534,762.54 × 289,717.20
  4. Step 4: Simplify right side
    356,442.30x = 154,929,905,753.69
  5. Step 5: Solve for x
    x = 154,929,905,753.69/356,442.30
  6. Step 6: Final answer
    x = 434,656.34

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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.