Home / 387,275.99-534,439.58-215,193.24

Finding the Fourth Proportional to 387,275.99, 534,439.58 and 215,193.24

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Solution

The fourth proportional to 387,275.99, 534,439.58 and 215,193.24 is: 296,965.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,275.99 : 534,439.58 = 215,193.24 : x
  2. Step 2: Convert to fraction form
    387,275.99/534,439.58 = 215,193.24/x
  3. Step 3: Cross multiply
    387,275.99x = 534,439.58 × 215,193.24
  4. Step 4: Simplify right side
    387,275.99x = 115,007,783,728.47
  5. Step 5: Solve for x
    x = 115,007,783,728.47/387,275.99
  6. Step 6: Final answer
    x = 296,965.96

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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.