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Finding the Fourth Proportional to 391,484.94, 540,223.66 and 230,308.86

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Solution

The fourth proportional to 391,484.94, 540,223.66 and 230,308.86 is: 317,811.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,484.94 : 540,223.66 = 230,308.86 : x
  2. Step 2: Convert to fraction form
    391,484.94/540,223.66 = 230,308.86/x
  3. Step 3: Cross multiply
    391,484.94x = 540,223.66 × 230,308.86
  4. Step 4: Simplify right side
    391,484.94x = 124,418,295,279.63
  5. Step 5: Solve for x
    x = 124,418,295,279.63/391,484.94
  6. Step 6: Final answer
    x = 317,811.19

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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.