Home / 385,317.64-531,738.18-215,551.72

Finding the Fourth Proportional to 385,317.64, 531,738.18 and 215,551.72

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Solution

The fourth proportional to 385,317.64, 531,738.18 and 215,551.72 is: 297,461.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,317.64 : 531,738.18 = 215,551.72 : x
  2. Step 2: Convert to fraction form
    385,317.64/531,738.18 = 215,551.72/x
  3. Step 3: Cross multiply
    385,317.64x = 531,738.18 × 215,551.72
  4. Step 4: Simplify right side
    385,317.64x = 114,617,079,288.67
  5. Step 5: Solve for x
    x = 114,617,079,288.67/385,317.64
  6. Step 6: Final answer
    x = 297,461.28

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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.