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Finding the Fourth Proportional to 889,349, 1,334,026.88 and 215,429

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Solution

The fourth proportional to 889,349, 1,334,026.88 and 215,429 is: 323,144.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,349 : 1,334,026.88 = 215,429 : x
  2. Step 2: Convert to fraction form
    889,349/1,334,026.88 = 215,429/x
  3. Step 3: Cross multiply
    889,349x = 1,334,026.88 × 215,429
  4. Step 4: Simplify right side
    889,349x = 287,388,075,654.38
  5. Step 5: Solve for x
    x = 287,388,075,654.38/889,349
  6. Step 6: Final answer
    x = 323,144.32

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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.