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Finding the Fourth Proportional to 355,990.79, 534,355.36 and 238,483.28

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Solution

The fourth proportional to 355,990.79, 534,355.36 and 238,483.28 is: 357,972.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,990.79 : 534,355.36 = 238,483.28 : x
  2. Step 2: Convert to fraction form
    355,990.79/534,355.36 = 238,483.28/x
  3. Step 3: Cross multiply
    355,990.79x = 534,355.36 × 238,483.28
  4. Step 4: Simplify right side
    355,990.79x = 127,434,819,678.06
  5. Step 5: Solve for x
    x = 127,434,819,678.06/355,990.79
  6. Step 6: Final answer
    x = 357,972.24

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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.