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Finding the Fourth Proportional to 306,624.34, 423,138.09 and 170,655.94

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Solution

The fourth proportional to 306,624.34, 423,138.09 and 170,655.94 is: 235,503.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,624.34 : 423,138.09 = 170,655.94 : x
  2. Step 2: Convert to fraction form
    306,624.34/423,138.09 = 170,655.94/x
  3. Step 3: Cross multiply
    306,624.34x = 423,138.09 × 170,655.94
  4. Step 4: Simplify right side
    306,624.34x = 72,211,028,498.75
  5. Step 5: Solve for x
    x = 72,211,028,498.75/306,624.34
  6. Step 6: Final answer
    x = 235,503.25

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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.