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Finding the Fourth Proportional to 318,345.64, 439,307.81 and 175,105.67

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Solution

The fourth proportional to 318,345.64, 439,307.81 and 175,105.67 is: 241,640.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,345.64 : 439,307.81 = 175,105.67 : x
  2. Step 2: Convert to fraction form
    318,345.64/439,307.81 = 175,105.67/x
  3. Step 3: Cross multiply
    318,345.64x = 439,307.81 × 175,105.67
  4. Step 4: Simplify right side
    318,345.64x = 76,925,288,406.28
  5. Step 5: Solve for x
    x = 76,925,288,406.28/318,345.64
  6. Step 6: Final answer
    x = 241,640.78

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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.