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Finding the Fourth Proportional to 445,521.33, 668,178.57 and 265,656.98

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Solution

The fourth proportional to 445,521.33, 668,178.57 and 265,656.98 is: 398,423.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,521.33 : 668,178.57 = 265,656.98 : x
  2. Step 2: Convert to fraction form
    445,521.33/668,178.57 = 265,656.98/x
  3. Step 3: Cross multiply
    445,521.33x = 668,178.57 × 265,656.98
  4. Step 4: Simplify right side
    445,521.33x = 177,506,301,006.92
  5. Step 5: Solve for x
    x = 177,506,301,006.92/445,521.33
  6. Step 6: Final answer
    x = 398,423.80

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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.