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Finding the Fourth Proportional to 489,907.88, 734,864.29 and 152,920.28

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Solution

The fourth proportional to 489,907.88, 734,864.29 and 152,920.28 is: 229,381.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,907.88 : 734,864.29 = 152,920.28 : x
  2. Step 2: Convert to fraction form
    489,907.88/734,864.29 = 152,920.28/x
  3. Step 3: Cross multiply
    489,907.88x = 734,864.29 × 152,920.28
  4. Step 4: Simplify right side
    489,907.88x = 112,375,650,596.78
  5. Step 5: Solve for x
    x = 112,375,650,596.78/489,907.88
  6. Step 6: Final answer
    x = 229,381.19

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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.