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Finding the Fourth Proportional to 310,312.80, 465,469.20 and 192,214.80

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Solution

The fourth proportional to 310,312.80, 465,469.20 and 192,214.80 is: 288,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,312.80 : 465,469.20 = 192,214.80 : x
  2. Step 2: Convert to fraction form
    310,312.80/465,469.20 = 192,214.80/x
  3. Step 3: Cross multiply
    310,312.80x = 465,469.20 × 192,214.80
  4. Step 4: Simplify right side
    310,312.80x = 89,470,069,184.16
  5. Step 5: Solve for x
    x = 89,470,069,184.16/310,312.80
  6. Step 6: Final answer
    x = 288,322.20

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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.