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Finding the Fourth Proportional to 216,312.34, 324,238.74 and 127,607.62

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Solution

The fourth proportional to 216,312.34, 324,238.74 and 127,607.62 is: 191,275.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,312.34 : 324,238.74 = 127,607.62 : x
  2. Step 2: Convert to fraction form
    216,312.34/324,238.74 = 127,607.62/x
  3. Step 3: Cross multiply
    216,312.34x = 324,238.74 × 127,607.62
  4. Step 4: Simplify right side
    216,312.34x = 41,375,333,923.20
  5. Step 5: Solve for x
    x = 41,375,333,923.20/216,312.34
  6. Step 6: Final answer
    x = 191,275.88

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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.