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Finding the Fourth Proportional to 387,032.58, 534,105.50 and 217,267.92

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Solution

The fourth proportional to 387,032.58, 534,105.50 and 217,267.92 is: 299,830.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,032.58 : 534,105.50 = 217,267.92 : x
  2. Step 2: Convert to fraction form
    387,032.58/534,105.50 = 217,267.92/x
  3. Step 3: Cross multiply
    387,032.58x = 534,105.50 × 217,267.92
  4. Step 4: Simplify right side
    387,032.58x = 116,043,989,959.22
  5. Step 5: Solve for x
    x = 116,043,989,959.22/387,032.58
  6. Step 6: Final answer
    x = 299,830.03

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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.