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Finding the Fourth Proportional to 288,831.57, 433,349.96 and 128,892.96

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Solution

The fourth proportional to 288,831.57, 433,349.96 and 128,892.96 is: 193,385.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,831.57 : 433,349.96 = 128,892.96 : x
  2. Step 2: Convert to fraction form
    288,831.57/433,349.96 = 128,892.96/x
  3. Step 3: Cross multiply
    288,831.57x = 433,349.96 × 128,892.96
  4. Step 4: Simplify right side
    288,831.57x = 55,855,758,415.82
  5. Step 5: Solve for x
    x = 55,855,758,415.82/288,831.57
  6. Step 6: Final answer
    x = 193,385.23

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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.