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Finding the Fourth Proportional to 405,247.80, 607,871.70 and 180,715.80

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Solution

The fourth proportional to 405,247.80, 607,871.70 and 180,715.80 is: 271,073.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,247.80 : 607,871.70 = 180,715.80 : x
  2. Step 2: Convert to fraction form
    405,247.80/607,871.70 = 180,715.80/x
  3. Step 3: Cross multiply
    405,247.80x = 607,871.70 × 180,715.80
  4. Step 4: Simplify right side
    405,247.80x = 109,852,020,562.86
  5. Step 5: Solve for x
    x = 109,852,020,562.86/405,247.80
  6. Step 6: Final answer
    x = 271,073.70

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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.