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Finding the Fourth Proportional to 373,377.80, 559,386.30 and 215,136.20

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Solution

The fourth proportional to 373,377.80, 559,386.30 and 215,136.20 is: 322,312.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,377.80 : 559,386.30 = 215,136.20 : x
  2. Step 2: Convert to fraction form
    373,377.80/559,386.30 = 215,136.20/x
  3. Step 3: Cross multiply
    373,377.80x = 559,386.30 × 215,136.20
  4. Step 4: Simplify right side
    373,377.80x = 120,344,242,914.06
  5. Step 5: Solve for x
    x = 120,344,242,914.06/373,377.80
  6. Step 6: Final answer
    x = 322,312.26

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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.