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Finding the Fourth Proportional to 489,776.40, 675,959.64 and 272,034

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Solution

The fourth proportional to 489,776.40, 675,959.64 and 272,034 is: 375,444.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,776.40 : 675,959.64 = 272,034 : x
  2. Step 2: Convert to fraction form
    489,776.40/675,959.64 = 272,034/x
  3. Step 3: Cross multiply
    489,776.40x = 675,959.64 × 272,034
  4. Step 4: Simplify right side
    489,776.40x = 183,884,004,707.76
  5. Step 5: Solve for x
    x = 183,884,004,707.76/489,776.40
  6. Step 6: Final answer
    x = 375,444.80

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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.