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Finding the Fourth Proportional to 310,845.80, 466,268.70 and 286,999.40

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Solution

The fourth proportional to 310,845.80, 466,268.70 and 286,999.40 is: 430,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,845.80 : 466,268.70 = 286,999.40 : x
  2. Step 2: Convert to fraction form
    310,845.80/466,268.70 = 286,999.40/x
  3. Step 3: Cross multiply
    310,845.80x = 466,268.70 × 286,999.40
  4. Step 4: Simplify right side
    310,845.80x = 133,818,837,138.78
  5. Step 5: Solve for x
    x = 133,818,837,138.78/310,845.80
  6. Step 6: Final answer
    x = 430,499.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.