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Finding the Fourth Proportional to 306,730.50, 423,254.07 and 170,733.12

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Solution

The fourth proportional to 306,730.50, 423,254.07 and 170,733.12 is: 235,592.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,730.50 : 423,254.07 = 170,733.12 : x
  2. Step 2: Convert to fraction form
    306,730.50/423,254.07 = 170,733.12/x
  3. Step 3: Cross multiply
    306,730.50x = 423,254.07 × 170,733.12
  4. Step 4: Simplify right side
    306,730.50x = 72,263,487,923.80
  5. Step 5: Solve for x
    x = 72,263,487,923.80/306,730.50
  6. Step 6: Final answer
    x = 235,592.77

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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.