Home / 384,845.07-531,087-215,079.21

Finding the Fourth Proportional to 384,845.07, 531,087 and 215,079.21

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Solution

The fourth proportional to 384,845.07, 531,087 and 215,079.21 is: 296,809.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,845.07 : 531,087 = 215,079.21 : x
  2. Step 2: Convert to fraction form
    384,845.07/531,087 = 215,079.21/x
  3. Step 3: Cross multiply
    384,845.07x = 531,087 × 215,079.21
  4. Step 4: Simplify right side
    384,845.07x = 114,225,772,401.27
  5. Step 5: Solve for x
    x = 114,225,772,401.27/384,845.07
  6. Step 6: Final answer
    x = 296,809.76

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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.