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Finding the Fourth Proportional to 387,248.58, 534,409.90 and 215,182.44

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Solution

The fourth proportional to 387,248.58, 534,409.90 and 215,182.44 is: 296,955.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,248.58 : 534,409.90 = 215,182.44 : x
  2. Step 2: Convert to fraction form
    387,248.58/534,409.90 = 215,182.44/x
  3. Step 3: Cross multiply
    387,248.58x = 534,409.90 × 215,182.44
  4. Step 4: Simplify right side
    387,248.58x = 114,995,626,242.16
  5. Step 5: Solve for x
    x = 114,995,626,242.16/387,248.58
  6. Step 6: Final answer
    x = 296,955.58

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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.