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Finding the Fourth Proportional to 360,003.60, 540,005.40 and 280,688.40

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Solution

The fourth proportional to 360,003.60, 540,005.40 and 280,688.40 is: 421,032.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,003.60 : 540,005.40 = 280,688.40 : x
  2. Step 2: Convert to fraction form
    360,003.60/540,005.40 = 280,688.40/x
  3. Step 3: Cross multiply
    360,003.60x = 540,005.40 × 280,688.40
  4. Step 4: Simplify right side
    360,003.60x = 151,573,251,717.36
  5. Step 5: Solve for x
    x = 151,573,251,717.36/360,003.60
  6. Step 6: Final answer
    x = 421,032.60

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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.