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Finding the Fourth Proportional to 315,230.40, 435,000.78 and 179,245.98

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Solution

The fourth proportional to 315,230.40, 435,000.78 and 179,245.98 is: 247,349.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,230.40 : 435,000.78 = 179,245.98 : x
  2. Step 2: Convert to fraction form
    315,230.40/435,000.78 = 179,245.98/x
  3. Step 3: Cross multiply
    315,230.40x = 435,000.78 × 179,245.98
  4. Step 4: Simplify right side
    315,230.40x = 77,972,141,111.86
  5. Step 5: Solve for x
    x = 77,972,141,111.86/315,230.40
  6. Step 6: Final answer
    x = 247,349.69

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1.5x scale

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.