Home / 215,434.51-297,315.42-154,186.45

Finding the Fourth Proportional to 215,434.51, 297,315.42 and 154,186.45

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Solution

The fourth proportional to 215,434.51, 297,315.42 and 154,186.45 is: 212,788.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,434.51 : 297,315.42 = 154,186.45 : x
  2. Step 2: Convert to fraction form
    215,434.51/297,315.42 = 154,186.45/x
  3. Step 3: Cross multiply
    215,434.51x = 297,315.42 × 154,186.45
  4. Step 4: Simplify right side
    215,434.51x = 45,842,009,140.06
  5. Step 5: Solve for x
    x = 45,842,009,140.06/215,434.51
  6. Step 6: Final answer
    x = 212,788.61

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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.