Home / 387,082.40-534,155.90-215,011.28

Finding the Fourth Proportional to 387,082.40, 534,155.90 and 215,011.28

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Solution

The fourth proportional to 387,082.40, 534,155.90 and 215,011.28 is: 296,705.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,082.40 : 534,155.90 = 215,011.28 : x
  2. Step 2: Convert to fraction form
    387,082.40/534,155.90 = 215,011.28/x
  3. Step 3: Cross multiply
    387,082.40x = 534,155.90 × 215,011.28
  4. Step 4: Simplify right side
    387,082.40x = 114,849,543,778.55
  5. Step 5: Solve for x
    x = 114,849,543,778.55/387,082.40
  6. Step 6: Final answer
    x = 296,705.67

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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.