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Finding the Fourth Proportional to 437,640.70, 656,461.05 and 260,056.30

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Solution

The fourth proportional to 437,640.70, 656,461.05 and 260,056.30 is: 390,084.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,640.70 : 656,461.05 = 260,056.30 : x
  2. Step 2: Convert to fraction form
    437,640.70/656,461.05 = 260,056.30/x
  3. Step 3: Cross multiply
    437,640.70x = 656,461.05 × 260,056.30
  4. Step 4: Simplify right side
    437,640.70x = 170,716,831,757.12
  5. Step 5: Solve for x
    x = 170,716,831,757.12/437,640.70
  6. Step 6: Final answer
    x = 390,084.45

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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.