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Finding the Fourth Proportional to 489,774.40, 675,956.88 and 272,032

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Solution

The fourth proportional to 489,774.40, 675,956.88 and 272,032 is: 375,442.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,774.40 : 675,956.88 = 272,032 : x
  2. Step 2: Convert to fraction form
    489,774.40/675,956.88 = 272,032/x
  3. Step 3: Cross multiply
    489,774.40x = 675,956.88 × 272,032
  4. Step 4: Simplify right side
    489,774.40x = 183,881,901,980.16
  5. Step 5: Solve for x
    x = 183,881,901,980.16/489,774.40
  6. Step 6: Final answer
    x = 375,442.04

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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.