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Finding the Fourth Proportional to 334,995.80, 502,493.70 and 311,376.20

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Solution

The fourth proportional to 334,995.80, 502,493.70 and 311,376.20 is: 467,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    334,995.80 : 502,493.70 = 311,376.20 : x
  2. Step 2: Convert to fraction form
    334,995.80/502,493.70 = 311,376.20/x
  3. Step 3: Cross multiply
    334,995.80x = 502,493.70 × 311,376.20
  4. Step 4: Simplify right side
    334,995.80x = 156,464,578,829.94
  5. Step 5: Solve for x
    x = 156,464,578,829.94/334,995.80
  6. Step 6: Final answer
    x = 467,064.30

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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.