Home / 258,368.23-356,568.10-155,006.30

Finding the Fourth Proportional to 258,368.23, 356,568.10 and 155,006.30

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Solution

The fourth proportional to 258,368.23, 356,568.10 and 155,006.30 is: 213,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,368.23 : 356,568.10 = 155,006.30 : x
  2. Step 2: Convert to fraction form
    258,368.23/356,568.10 = 155,006.30/x
  3. Step 3: Cross multiply
    258,368.23x = 356,568.10 × 155,006.30
  4. Step 4: Simplify right side
    258,368.23x = 55,270,300,311.77
  5. Step 5: Solve for x
    x = 55,270,300,311.77/258,368.23
  6. Step 6: Final answer
    x = 213,920.65

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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.