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Finding the Fourth Proportional to 360,210.90, 540,316.33 and 135,621.72

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Solution

The fourth proportional to 360,210.90, 540,316.33 and 135,621.72 is: 203,432.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,210.90 : 540,316.33 = 135,621.72 : x
  2. Step 2: Convert to fraction form
    360,210.90/540,316.33 = 135,621.72/x
  3. Step 3: Cross multiply
    360,210.90x = 540,316.33 × 135,621.72
  4. Step 4: Simplify right side
    360,210.90x = 73,278,630,018.69
  5. Step 5: Solve for x
    x = 73,278,630,018.69/360,210.90
  6. Step 6: Final answer
    x = 203,432.57

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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.