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Finding the Fourth Proportional to 407,864.80, 611,797.20 and 295,307.20

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Solution

The fourth proportional to 407,864.80, 611,797.20 and 295,307.20 is: 442,960.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,864.80 : 611,797.20 = 295,307.20 : x
  2. Step 2: Convert to fraction form
    407,864.80/611,797.20 = 295,307.20/x
  3. Step 3: Cross multiply
    407,864.80x = 611,797.20 × 295,307.20
  4. Step 4: Simplify right side
    407,864.80x = 180,668,118,099.84
  5. Step 5: Solve for x
    x = 180,668,118,099.84/407,864.80
  6. Step 6: Final answer
    x = 442,960.80

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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.