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Finding the Fourth Proportional to 360,012.20, 540,018.30 and 123,319.40

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Solution

The fourth proportional to 360,012.20, 540,018.30 and 123,319.40 is: 184,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,012.20 : 540,018.30 = 123,319.40 : x
  2. Step 2: Convert to fraction form
    360,012.20/540,018.30 = 123,319.40/x
  3. Step 3: Cross multiply
    360,012.20x = 540,018.30 × 123,319.40
  4. Step 4: Simplify right side
    360,012.20x = 66,594,732,745.02
  5. Step 5: Solve for x
    x = 66,594,732,745.02/360,012.20
  6. Step 6: Final answer
    x = 184,979.10

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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.