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Finding the Fourth Proportional to 391,502.61, 540,533.88 and 300,696.24

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Solution

The fourth proportional to 391,502.61, 540,533.88 and 300,696.24 is: 415,160.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,502.61 : 540,533.88 = 300,696.24 : x
  2. Step 2: Convert to fraction form
    391,502.61/540,533.88 = 300,696.24/x
  3. Step 3: Cross multiply
    391,502.61x = 540,533.88 × 300,696.24
  4. Step 4: Simplify right side
    391,502.61x = 162,536,505,308.61
  5. Step 5: Solve for x
    x = 162,536,505,308.61/391,502.61
  6. Step 6: Final answer
    x = 415,160.72

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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.