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Finding the Fourth Proportional to 387,043.30, 534,026.28 and 225,806.32

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Solution

The fourth proportional to 387,043.30, 534,026.28 and 225,806.32 is: 311,558.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,043.30 : 534,026.28 = 225,806.32 : x
  2. Step 2: Convert to fraction form
    387,043.30/534,026.28 = 225,806.32/x
  3. Step 3: Cross multiply
    387,043.30x = 534,026.28 × 225,806.32
  4. Step 4: Simplify right side
    387,043.30x = 120,586,509,070.09
  5. Step 5: Solve for x
    x = 120,586,509,070.09/387,043.30
  6. Step 6: Final answer
    x = 311,558.19

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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.