Home / 291,312.48-402,018.66-163,992.54

Finding the Fourth Proportional to 291,312.48, 402,018.66 and 163,992.54

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Solution

The fourth proportional to 291,312.48, 402,018.66 and 163,992.54 is: 226,313.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,312.48 : 402,018.66 = 163,992.54 : x
  2. Step 2: Convert to fraction form
    291,312.48/402,018.66 = 163,992.54/x
  3. Step 3: Cross multiply
    291,312.48x = 402,018.66 × 163,992.54
  4. Step 4: Simplify right side
    291,312.48x = 65,928,061,180.80
  5. Step 5: Solve for x
    x = 65,928,061,180.80/291,312.48
  6. Step 6: Final answer
    x = 226,313.89

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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.