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Finding the Fourth Proportional to 370,642.72, 556,734.32 and 299,645.60

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Solution

The fourth proportional to 370,642.72, 556,734.32 and 299,645.60 is: 450,091.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,642.72 : 556,734.32 = 299,645.60 : x
  2. Step 2: Convert to fraction form
    370,642.72/556,734.32 = 299,645.60/x
  3. Step 3: Cross multiply
    370,642.72x = 556,734.32 × 299,645.60
  4. Step 4: Simplify right side
    370,642.72x = 166,822,989,356.99
  5. Step 5: Solve for x
    x = 166,822,989,356.99/370,642.72
  6. Step 6: Final answer
    x = 450,091.10

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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.