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Finding the Fourth Proportional to 661,492.80, 992,498.40 and 262,065.60

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Solution

The fourth proportional to 661,492.80, 992,498.40 and 262,065.60 is: 393,201.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,492.80 : 992,498.40 = 262,065.60 : x
  2. Step 2: Convert to fraction form
    661,492.80/992,498.40 = 262,065.60/x
  3. Step 3: Cross multiply
    661,492.80x = 992,498.40 × 262,065.60
  4. Step 4: Simplify right side
    661,492.80x = 260,099,688,695.04
  5. Step 5: Solve for x
    x = 260,099,688,695.04/661,492.80
  6. Step 6: Final answer
    x = 393,201.09

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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.