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Finding the Fourth Proportional to 385,335.20, 578,002.80 and 101,025.20

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Solution

The fourth proportional to 385,335.20, 578,002.80 and 101,025.20 is: 151,537.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,335.20 : 578,002.80 = 101,025.20 : x
  2. Step 2: Convert to fraction form
    385,335.20/578,002.80 = 101,025.20/x
  3. Step 3: Cross multiply
    385,335.20x = 578,002.80 × 101,025.20
  4. Step 4: Simplify right side
    385,335.20x = 58,392,848,470.56
  5. Step 5: Solve for x
    x = 58,392,848,470.56/385,335.20
  6. Step 6: Final answer
    x = 151,537.80

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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.