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Finding the Fourth Proportional to 387,031.53, 534,104.82 and 214,949.91

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Solution

The fourth proportional to 387,031.53, 534,104.82 and 214,949.91 is: 296,631.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,031.53 : 534,104.82 = 214,949.91 : x
  2. Step 2: Convert to fraction form
    387,031.53/534,104.82 = 214,949.91/x
  3. Step 3: Cross multiply
    387,031.53x = 534,104.82 × 214,949.91
  4. Step 4: Simplify right side
    387,031.53x = 114,805,782,989.57
  5. Step 5: Solve for x
    x = 114,805,782,989.57/387,031.53
  6. Step 6: Final answer
    x = 296,631.60

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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.