Home / 215,133.49-297,017.04-138,679.75

Finding the Fourth Proportional to 215,133.49, 297,017.04 and 138,679.75

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Solution

The fourth proportional to 215,133.49, 297,017.04 and 138,679.75 is: 191,463.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,133.49 : 297,017.04 = 138,679.75 : x
  2. Step 2: Convert to fraction form
    215,133.49/297,017.04 = 138,679.75/x
  3. Step 3: Cross multiply
    215,133.49x = 297,017.04 × 138,679.75
  4. Step 4: Simplify right side
    215,133.49x = 41,190,248,852.94
  5. Step 5: Solve for x
    x = 41,190,248,852.94/215,133.49
  6. Step 6: Final answer
    x = 191,463.68

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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.