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Finding the Fourth Proportional to 289,624.34, 399,681.32 and 162,300.84

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Solution

The fourth proportional to 289,624.34, 399,681.32 and 162,300.84 is: 223,975.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,624.34 : 399,681.32 = 162,300.84 : x
  2. Step 2: Convert to fraction form
    289,624.34/399,681.32 = 162,300.84/x
  3. Step 3: Cross multiply
    289,624.34x = 399,681.32 × 162,300.84
  4. Step 4: Simplify right side
    289,624.34x = 64,868,613,156.80
  5. Step 5: Solve for x
    x = 64,868,613,156.80/289,624.34
  6. Step 6: Final answer
    x = 223,975.01

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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.