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Finding the Fourth Proportional to 218,704.04, 301,817.98 and 128,051.53

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Solution

The fourth proportional to 218,704.04, 301,817.98 and 128,051.53 is: 176,714.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,704.04 : 301,817.98 = 128,051.53 : x
  2. Step 2: Convert to fraction form
    218,704.04/301,817.98 = 128,051.53/x
  3. Step 3: Cross multiply
    218,704.04x = 301,817.98 × 128,051.53
  4. Step 4: Simplify right side
    218,704.04x = 38,648,252,239.83
  5. Step 5: Solve for x
    x = 38,648,252,239.83/218,704.04
  6. Step 6: Final answer
    x = 176,714.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.