Home / 257,218.80-385,828.20-162,740.40

Finding the Fourth Proportional to 257,218.80, 385,828.20 and 162,740.40

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Solution

The fourth proportional to 257,218.80, 385,828.20 and 162,740.40 is: 244,110.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,218.80 : 385,828.20 = 162,740.40 : x
  2. Step 2: Convert to fraction form
    257,218.80/385,828.20 = 162,740.40/x
  3. Step 3: Cross multiply
    257,218.80x = 385,828.20 × 162,740.40
  4. Step 4: Simplify right side
    257,218.80x = 62,789,835,599.28
  5. Step 5: Solve for x
    x = 62,789,835,599.28/257,218.80
  6. Step 6: Final answer
    x = 244,110.60

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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.