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Finding the Fourth Proportional to 386,767.98, 533,808 and 243,572.94

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Solution

The fourth proportional to 386,767.98, 533,808 and 243,572.94 is: 336,173.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,767.98 : 533,808 = 243,572.94 : x
  2. Step 2: Convert to fraction form
    386,767.98/533,808 = 243,572.94/x
  3. Step 3: Cross multiply
    386,767.98x = 533,808 × 243,572.94
  4. Step 4: Simplify right side
    386,767.98x = 130,021,183,955.52
  5. Step 5: Solve for x
    x = 130,021,183,955.52/386,767.98
  6. Step 6: Final answer
    x = 336,173.60

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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.