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Finding the Fourth Proportional to 489,925.71, 734,602.50 and 190,055.88

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Solution

The fourth proportional to 489,925.71, 734,602.50 and 190,055.88 is: 284,972.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,925.71 : 734,602.50 = 190,055.88 : x
  2. Step 2: Convert to fraction form
    489,925.71/734,602.50 = 190,055.88/x
  3. Step 3: Cross multiply
    489,925.71x = 734,602.50 × 190,055.88
  4. Step 4: Simplify right side
    489,925.71x = 139,615,524,587.70
  5. Step 5: Solve for x
    x = 139,615,524,587.70/489,925.71
  6. Step 6: Final answer
    x = 284,972.85

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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.