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Finding the Fourth Proportional to 279,168.24, 385,646.76 and 216,316.56

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Solution

The fourth proportional to 279,168.24, 385,646.76 and 216,316.56 is: 298,822.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,168.24 : 385,646.76 = 216,316.56 : x
  2. Step 2: Convert to fraction form
    279,168.24/385,646.76 = 216,316.56/x
  3. Step 3: Cross multiply
    279,168.24x = 385,646.76 × 216,316.56
  4. Step 4: Simplify right side
    279,168.24x = 83,421,780,498.35
  5. Step 5: Solve for x
    x = 83,421,780,498.35/279,168.24
  6. Step 6: Final answer
    x = 298,822.60

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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.