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Finding the Fourth Proportional to 203,500.84, 280,831.16 and 112,870.69

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Solution

The fourth proportional to 203,500.84, 280,831.16 and 112,870.69 is: 155,761.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,500.84 : 280,831.16 = 112,870.69 : x
  2. Step 2: Convert to fraction form
    203,500.84/280,831.16 = 112,870.69/x
  3. Step 3: Cross multiply
    203,500.84x = 280,831.16 × 112,870.69
  4. Step 4: Simplify right side
    203,500.84x = 31,697,606,802.70
  5. Step 5: Solve for x
    x = 31,697,606,802.70/203,500.84
  6. Step 6: Final answer
    x = 155,761.55

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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.