Home / 215,856.51-323,894.10-145,588.20

Finding the Fourth Proportional to 215,856.51, 323,894.10 and 145,588.20

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Solution

The fourth proportional to 215,856.51, 323,894.10 and 145,588.20 is: 218,456.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,856.51 : 323,894.10 = 145,588.20 : x
  2. Step 2: Convert to fraction form
    215,856.51/323,894.10 = 145,588.20/x
  3. Step 3: Cross multiply
    215,856.51x = 323,894.10 × 145,588.20
  4. Step 4: Simplify right side
    215,856.51x = 47,155,159,009.62
  5. Step 5: Solve for x
    x = 47,155,159,009.62/215,856.51
  6. Step 6: Final answer
    x = 218,456.04

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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.