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Finding the Fourth Proportional to 489,513.72, 734,340.65 and 216,264.27

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Solution

The fourth proportional to 489,513.72, 734,340.65 and 216,264.27 is: 324,427.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,513.72 : 734,340.65 = 216,264.27 : x
  2. Step 2: Convert to fraction form
    489,513.72/734,340.65 = 216,264.27/x
  3. Step 3: Cross multiply
    489,513.72x = 734,340.65 × 216,264.27
  4. Step 4: Simplify right side
    489,513.72x = 158,811,644,603.58
  5. Step 5: Solve for x
    x = 158,811,644,603.58/489,513.72
  6. Step 6: Final answer
    x = 324,427.36

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1.5x scale

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.