Home / 258,538.01-356,636.72-155,145.45

Finding the Fourth Proportional to 258,538.01, 356,636.72 and 155,145.45

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Solution

The fourth proportional to 258,538.01, 356,636.72 and 155,145.45 is: 214,013.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,538.01 : 356,636.72 = 155,145.45 : x
  2. Step 2: Convert to fraction form
    258,538.01/356,636.72 = 155,145.45/x
  3. Step 3: Cross multiply
    258,538.01x = 356,636.72 × 155,145.45
  4. Step 4: Simplify right side
    258,538.01x = 55,330,564,798.79
  5. Step 5: Solve for x
    x = 55,330,564,798.79/258,538.01
  6. Step 6: Final answer
    x = 214,013.27

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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.