Home / 485,148.15-669,453.12-281,263.05

Finding the Fourth Proportional to 485,148.15, 669,453.12 and 281,263.05

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Solution

The fourth proportional to 485,148.15, 669,453.12 and 281,263.05 is: 388,113.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,148.15 : 669,453.12 = 281,263.05 : x
  2. Step 2: Convert to fraction form
    485,148.15/669,453.12 = 281,263.05/x
  3. Step 3: Cross multiply
    485,148.15x = 669,453.12 × 281,263.05
  4. Step 4: Simplify right side
    485,148.15x = 188,292,426,363.22
  5. Step 5: Solve for x
    x = 188,292,426,363.22/485,148.15
  6. Step 6: Final answer
    x = 388,113.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.