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Finding the Fourth Proportional to 489,931.68, 734,996.88 and 152,958.72

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Solution

The fourth proportional to 489,931.68, 734,996.88 and 152,958.72 is: 229,469.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,931.68 : 734,996.88 = 152,958.72 : x
  2. Step 2: Convert to fraction form
    489,931.68/734,996.88 = 152,958.72/x
  3. Step 3: Cross multiply
    489,931.68x = 734,996.88 × 152,958.72
  4. Step 4: Simplify right side
    489,931.68x = 112,424,181,968.79
  5. Step 5: Solve for x
    x = 112,424,181,968.79/489,931.68
  6. Step 6: Final answer
    x = 229,469.10

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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.