Home / 391,529.28-540,417.12-230,436

Finding the Fourth Proportional to 391,529.28, 540,417.12 and 230,436

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Solution

The fourth proportional to 391,529.28, 540,417.12 and 230,436 is: 318,064.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,529.28 : 540,417.12 = 230,436 : x
  2. Step 2: Convert to fraction form
    391,529.28/540,417.12 = 230,436/x
  3. Step 3: Cross multiply
    391,529.28x = 540,417.12 × 230,436
  4. Step 4: Simplify right side
    391,529.28x = 124,531,559,464.32
  5. Step 5: Solve for x
    x = 124,531,559,464.32/391,529.28
  6. Step 6: Final answer
    x = 318,064.49

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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.