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Finding the Fourth Proportional to 489,275.52, 675,160.32 and 274,386.24

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Solution

The fourth proportional to 489,275.52, 675,160.32 and 274,386.24 is: 378,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,275.52 : 675,160.32 = 274,386.24 : x
  2. Step 2: Convert to fraction form
    489,275.52/675,160.32 = 274,386.24/x
  3. Step 3: Cross multiply
    489,275.52x = 675,160.32 × 274,386.24
  4. Step 4: Simplify right side
    489,275.52x = 185,254,701,602.00
  5. Step 5: Solve for x
    x = 185,254,701,602.00/489,275.52
  6. Step 6: Final answer
    x = 378,630.64

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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.