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Finding the Fourth Proportional to 349,722.60, 524,583.90 and 128,077.80

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Solution

The fourth proportional to 349,722.60, 524,583.90 and 128,077.80 is: 192,116.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,722.60 : 524,583.90 = 128,077.80 : x
  2. Step 2: Convert to fraction form
    349,722.60/524,583.90 = 128,077.80/x
  3. Step 3: Cross multiply
    349,722.60x = 524,583.90 × 128,077.80
  4. Step 4: Simplify right side
    349,722.60x = 67,187,551,827.42
  5. Step 5: Solve for x
    x = 67,187,551,827.42/349,722.60
  6. Step 6: Final answer
    x = 192,116.70

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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.