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Finding the Fourth Proportional to 306,031.40, 459,047.10 and 216,801.80

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Solution

The fourth proportional to 306,031.40, 459,047.10 and 216,801.80 is: 325,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,031.40 : 459,047.10 = 216,801.80 : x
  2. Step 2: Convert to fraction form
    306,031.40/459,047.10 = 216,801.80/x
  3. Step 3: Cross multiply
    306,031.40x = 459,047.10 × 216,801.80
  4. Step 4: Simplify right side
    306,031.40x = 99,522,237,564.78
  5. Step 5: Solve for x
    x = 99,522,237,564.78/306,031.40
  6. Step 6: Final answer
    x = 325,202.70

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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.