Home / 318,025.50-438,612.30-215,883.06

Finding the Fourth Proportional to 318,025.50, 438,612.30 and 215,883.06

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Solution

The fourth proportional to 318,025.50, 438,612.30 and 215,883.06 is: 297,740.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,025.50 : 438,612.30 = 215,883.06 : x
  2. Step 2: Convert to fraction form
    318,025.50/438,612.30 = 215,883.06/x
  3. Step 3: Cross multiply
    318,025.50x = 438,612.30 × 215,883.06
  4. Step 4: Simplify right side
    318,025.50x = 94,688,965,477.64
  5. Step 5: Solve for x
    x = 94,688,965,477.64/318,025.50
  6. Step 6: Final answer
    x = 297,740.17

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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.