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Finding the Fourth Proportional to 556,915.20, 768,543.64 and 302,266.44

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Solution

The fourth proportional to 556,915.20, 768,543.64 and 302,266.44 is: 417,128.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,915.20 : 768,543.64 = 302,266.44 : x
  2. Step 2: Convert to fraction form
    556,915.20/768,543.64 = 302,266.44/x
  3. Step 3: Cross multiply
    556,915.20x = 768,543.64 × 302,266.44
  4. Step 4: Simplify right side
    556,915.20x = 232,304,950,047.44
  5. Step 5: Solve for x
    x = 232,304,950,047.44/556,915.20
  6. Step 6: Final answer
    x = 417,128.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.