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Finding the Fourth Proportional to 313,136.64, 429,471.60 and 300,276.96

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Solution

The fourth proportional to 313,136.64, 429,471.60 and 300,276.96 is: 411,834.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,136.64 : 429,471.60 = 300,276.96 : x
  2. Step 2: Convert to fraction form
    313,136.64/429,471.60 = 300,276.96/x
  3. Step 3: Cross multiply
    313,136.64x = 429,471.60 × 300,276.96
  4. Step 4: Simplify right side
    313,136.64x = 128,960,426,454.34
  5. Step 5: Solve for x
    x = 128,960,426,454.34/313,136.64
  6. Step 6: Final answer
    x = 411,834.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.