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Finding the Fourth Proportional to 310,056.62, 464,999.85 and 85,364.30

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Solution

The fourth proportional to 310,056.62, 464,999.85 and 85,364.30 is: 128,023.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,056.62 : 464,999.85 = 85,364.30 : x
  2. Step 2: Convert to fraction form
    310,056.62/464,999.85 = 85,364.30/x
  3. Step 3: Cross multiply
    310,056.62x = 464,999.85 × 85,364.30
  4. Step 4: Simplify right side
    310,056.62x = 39,694,386,695.36
  5. Step 5: Solve for x
    x = 39,694,386,695.36/310,056.62
  6. Step 6: Final answer
    x = 128,023.03

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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.