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Finding the Fourth Proportional to 435,939.40, 653,423.10 and 169,611.40

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Solution

The fourth proportional to 435,939.40, 653,423.10 and 169,611.40 is: 254,228.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,939.40 : 653,423.10 = 169,611.40 : x
  2. Step 2: Convert to fraction form
    435,939.40/653,423.10 = 169,611.40/x
  3. Step 3: Cross multiply
    435,939.40x = 653,423.10 × 169,611.40
  4. Step 4: Simplify right side
    435,939.40x = 110,828,006,783.34
  5. Step 5: Solve for x
    x = 110,828,006,783.34/435,939.40
  6. Step 6: Final answer
    x = 254,228.01

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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.