Home / 402,110.20-555,036.65-258,870.25

Finding the Fourth Proportional to 402,110.20, 555,036.65 and 258,870.25

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Solution

The fourth proportional to 402,110.20, 555,036.65 and 258,870.25 is: 357,321.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,110.20 : 555,036.65 = 258,870.25 : x
  2. Step 2: Convert to fraction form
    402,110.20/555,036.65 = 258,870.25/x
  3. Step 3: Cross multiply
    402,110.20x = 555,036.65 × 258,870.25
  4. Step 4: Simplify right side
    402,110.20x = 143,682,476,344.66
  5. Step 5: Solve for x
    x = 143,682,476,344.66/402,110.20
  6. Step 6: Final answer
    x = 357,321.14

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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.