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Finding the Fourth Proportional to 385,356.72, 531,809.04 and 238,214.16

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Solution

The fourth proportional to 385,356.72, 531,809.04 and 238,214.16 is: 328,745.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,356.72 : 531,809.04 = 238,214.16 : x
  2. Step 2: Convert to fraction form
    385,356.72/531,809.04 = 238,214.16/x
  3. Step 3: Cross multiply
    385,356.72x = 531,809.04 × 238,214.16
  4. Step 4: Simplify right side
    385,356.72x = 126,684,443,744.01
  5. Step 5: Solve for x
    x = 126,684,443,744.01/385,356.72
  6. Step 6: Final answer
    x = 328,745.91

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1.5x scale

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.