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Finding the Fourth Proportional to 172,053.80, 257,562.30 and 153,391.40

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Solution

The fourth proportional to 172,053.80, 257,562.30 and 153,391.40 is: 229,624.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,053.80 : 257,562.30 = 153,391.40 : x
  2. Step 2: Convert to fraction form
    172,053.80/257,562.30 = 153,391.40/x
  3. Step 3: Cross multiply
    172,053.80x = 257,562.30 × 153,391.40
  4. Step 4: Simplify right side
    172,053.80x = 39,507,841,784.22
  5. Step 5: Solve for x
    x = 39,507,841,784.22/172,053.80
  6. Step 6: Final answer
    x = 229,624.93

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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.