Home / 258,303.29-387,454.40-71,314.25

Finding the Fourth Proportional to 258,303.29, 387,454.40 and 71,314.25

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Solution

The fourth proportional to 258,303.29, 387,454.40 and 71,314.25 is: 106,971.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,303.29 : 387,454.40 = 71,314.25 : x
  2. Step 2: Convert to fraction form
    258,303.29/387,454.40 = 71,314.25/x
  3. Step 3: Cross multiply
    258,303.29x = 387,454.40 × 71,314.25
  4. Step 4: Simplify right side
    258,303.29x = 27,631,019,588.63
  5. Step 5: Solve for x
    x = 27,631,019,588.63/258,303.29
  6. Step 6: Final answer
    x = 106,971.23

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1.5x scale

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.