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Finding the Fourth Proportional to 177,622.40, 266,206.80 and 72,322.40

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Solution

The fourth proportional to 177,622.40, 266,206.80 and 72,322.40 is: 108,391.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,622.40 : 266,206.80 = 72,322.40 : x
  2. Step 2: Convert to fraction form
    177,622.40/266,206.80 = 72,322.40/x
  3. Step 3: Cross multiply
    177,622.40x = 266,206.80 × 72,322.40
  4. Step 4: Simplify right side
    177,622.40x = 19,252,714,672.32
  5. Step 5: Solve for x
    x = 19,252,714,672.32/177,622.40
  6. Step 6: Final answer
    x = 108,391.25

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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.