Home / 215,749.04-297,726.80-135,220

Finding the Fourth Proportional to 215,749.04, 297,726.80 and 135,220

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Solution

The fourth proportional to 215,749.04, 297,726.80 and 135,220 is: 186,599.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,749.04 : 297,726.80 = 135,220 : x
  2. Step 2: Convert to fraction form
    215,749.04/297,726.80 = 135,220/x
  3. Step 3: Cross multiply
    215,749.04x = 297,726.80 × 135,220
  4. Step 4: Simplify right side
    215,749.04x = 40,258,617,896
  5. Step 5: Solve for x
    x = 40,258,617,896/215,749.04
  6. Step 6: Final answer
    x = 186,599.29

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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.