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Finding the Fourth Proportional to 288,899.80, 432,831.30 and 247,427.80

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Solution

The fourth proportional to 288,899.80, 432,831.30 and 247,427.80 is: 370,697.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,899.80 : 432,831.30 = 247,427.80 : x
  2. Step 2: Convert to fraction form
    288,899.80/432,831.30 = 247,427.80/x
  3. Step 3: Cross multiply
    288,899.80x = 432,831.30 × 247,427.80
  4. Step 4: Simplify right side
    288,899.80x = 107,094,496,330.14
  5. Step 5: Solve for x
    x = 107,094,496,330.14/288,899.80
  6. Step 6: Final answer
    x = 370,697.72

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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.