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Finding the Fourth Proportional to 313,011, 431,955.18 and 178,875

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Solution

The fourth proportional to 313,011, 431,955.18 and 178,875 is: 246,847.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,011 : 431,955.18 = 178,875 : x
  2. Step 2: Convert to fraction form
    313,011/431,955.18 = 178,875/x
  3. Step 3: Cross multiply
    313,011x = 431,955.18 × 178,875
  4. Step 4: Simplify right side
    313,011x = 77,265,982,822.50
  5. Step 5: Solve for x
    x = 77,265,982,822.50/313,011
  6. Step 6: Final answer
    x = 246,847.50

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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.