Home / 391,664.16-540,490.32-230,500.08

Finding the Fourth Proportional to 391,664.16, 540,490.32 and 230,500.08

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Solution

The fourth proportional to 391,664.16, 540,490.32 and 230,500.08 is: 318,086.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,664.16 : 540,490.32 = 230,500.08 : x
  2. Step 2: Convert to fraction form
    391,664.16/540,490.32 = 230,500.08/x
  3. Step 3: Cross multiply
    391,664.16x = 540,490.32 × 230,500.08
  4. Step 4: Simplify right side
    391,664.16x = 124,583,061,999.23
  5. Step 5: Solve for x
    x = 124,583,061,999.23/391,664.16
  6. Step 6: Final answer
    x = 318,086.45

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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.