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Finding the Fourth Proportional to 313,718.50, 432,989.86 and 179,582.50

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Solution

The fourth proportional to 313,718.50, 432,989.86 and 179,582.50 is: 247,857.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,718.50 : 432,989.86 = 179,582.50 : x
  2. Step 2: Convert to fraction form
    313,718.50/432,989.86 = 179,582.50/x
  3. Step 3: Cross multiply
    313,718.50x = 432,989.86 × 179,582.50
  4. Step 4: Simplify right side
    313,718.50x = 77,757,401,533.45
  5. Step 5: Solve for x
    x = 77,757,401,533.45/313,718.50
  6. Step 6: Final answer
    x = 247,857.24

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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.