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Finding the Fourth Proportional to 360,142.09, 540,054 and 191,622.47

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Solution

The fourth proportional to 360,142.09, 540,054 and 191,622.47 is: 287,349.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    360,142.09 : 540,054 = 191,622.47 : x
  2. Step 2: Convert to fraction form
    360,142.09/540,054 = 191,622.47/x
  3. Step 3: Cross multiply
    360,142.09x = 540,054 × 191,622.47
  4. Step 4: Simplify right side
    360,142.09x = 103,486,478,713.11
  5. Step 5: Solve for x
    x = 103,486,478,713.11/360,142.09
  6. Step 6: Final answer
    x = 287,349.03

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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.