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Finding the Fourth Proportional to 478,516.10, 717,885.20 and 162,975.74

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Solution

The fourth proportional to 478,516.10, 717,885.20 and 162,975.74 is: 244,501.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,516.10 : 717,885.20 = 162,975.74 : x
  2. Step 2: Convert to fraction form
    478,516.10/717,885.20 = 162,975.74/x
  3. Step 3: Cross multiply
    478,516.10x = 717,885.20 × 162,975.74
  4. Step 4: Simplify right side
    478,516.10x = 116,997,871,705.05
  5. Step 5: Solve for x
    x = 116,997,871,705.05/478,516.10
  6. Step 6: Final answer
    x = 244,501.43

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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.