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Finding the Fourth Proportional to 589,316.70, 884,039.85 and 215,420.70

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Solution

The fourth proportional to 589,316.70, 884,039.85 and 215,420.70 is: 323,154.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    589,316.70 : 884,039.85 = 215,420.70 : x
  2. Step 2: Convert to fraction form
    589,316.70/884,039.85 = 215,420.70/x
  3. Step 3: Cross multiply
    589,316.70x = 884,039.85 × 215,420.70
  4. Step 4: Simplify right side
    589,316.70x = 190,440,483,314.90
  5. Step 5: Solve for x
    x = 190,440,483,314.90/589,316.70
  6. Step 6: Final answer
    x = 323,154.74

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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.