Home / 305,518.42-458,168.28-105,785.20

Finding the Fourth Proportional to 305,518.42, 458,168.28 and 105,785.20

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Solution

The fourth proportional to 305,518.42, 458,168.28 and 105,785.20 is: 158,639.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,518.42 : 458,168.28 = 105,785.20 : x
  2. Step 2: Convert to fraction form
    305,518.42/458,168.28 = 105,785.20/x
  3. Step 3: Cross multiply
    305,518.42x = 458,168.28 × 105,785.20
  4. Step 4: Simplify right side
    305,518.42x = 48,467,423,133.46
  5. Step 5: Solve for x
    x = 48,467,423,133.46/305,518.42
  6. Step 6: Final answer
    x = 158,639.94

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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.