Home / 258,609.08-356,878.18-145,429.40

Finding the Fourth Proportional to 258,609.08, 356,878.18 and 145,429.40

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Solution

The fourth proportional to 258,609.08, 356,878.18 and 145,429.40 is: 200,691.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,609.08 : 356,878.18 = 145,429.40 : x
  2. Step 2: Convert to fraction form
    258,609.08/356,878.18 = 145,429.40/x
  3. Step 3: Cross multiply
    258,609.08x = 356,878.18 × 145,429.40
  4. Step 4: Simplify right side
    258,609.08x = 51,900,579,590.49
  5. Step 5: Solve for x
    x = 51,900,579,590.49/258,609.08
  6. Step 6: Final answer
    x = 200,691.25

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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.