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Finding the Fourth Proportional to 318,554.55, 477,831.24 and 218,411.15

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Solution

The fourth proportional to 318,554.55, 477,831.24 and 218,411.15 is: 327,616.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,554.55 : 477,831.24 = 218,411.15 : x
  2. Step 2: Convert to fraction form
    318,554.55/477,831.24 = 218,411.15/x
  3. Step 3: Cross multiply
    318,554.55x = 477,831.24 × 218,411.15
  4. Step 4: Simplify right side
    318,554.55x = 104,363,668,245.17
  5. Step 5: Solve for x
    x = 104,363,668,245.17/318,554.55
  6. Step 6: Final answer
    x = 327,616.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.