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Finding the Fourth Proportional to 387,086.80, 580,015.80 and 334,248.40

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Solution

The fourth proportional to 387,086.80, 580,015.80 and 334,248.40 is: 500,842.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,086.80 : 580,015.80 = 334,248.40 : x
  2. Step 2: Convert to fraction form
    387,086.80/580,015.80 = 334,248.40/x
  3. Step 3: Cross multiply
    387,086.80x = 580,015.80 × 334,248.40
  4. Step 4: Simplify right side
    387,086.80x = 193,869,353,124.72
  5. Step 5: Solve for x
    x = 193,869,353,124.72/387,086.80
  6. Step 6: Final answer
    x = 500,842.07

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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.