Home / 313,983.21-470,991.15-103,637.55

Finding the Fourth Proportional to 313,983.21, 470,991.15 and 103,637.55

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Solution

The fourth proportional to 313,983.21, 470,991.15 and 103,637.55 is: 155,461.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,983.21 : 470,991.15 = 103,637.55 : x
  2. Step 2: Convert to fraction form
    313,983.21/470,991.15 = 103,637.55/x
  3. Step 3: Cross multiply
    313,983.21x = 470,991.15 × 103,637.55
  4. Step 4: Simplify right side
    313,983.21x = 48,812,368,857.68
  5. Step 5: Solve for x
    x = 48,812,368,857.68/313,983.21
  6. Step 6: Final answer
    x = 155,461.72

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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.