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Finding the Fourth Proportional to 221,451.60, 309,332.40 and 221,451.60

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Solution

The fourth proportional to 221,451.60, 309,332.40 and 221,451.60 is: 309,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,451.60 : 309,332.40 = 221,451.60 : x
  2. Step 2: Convert to fraction form
    221,451.60/309,332.40 = 221,451.60/x
  3. Step 3: Cross multiply
    221,451.60x = 309,332.40 × 221,451.60
  4. Step 4: Simplify right side
    221,451.60x = 68,502,154,911.84
  5. Step 5: Solve for x
    x = 68,502,154,911.84/221,451.60
  6. Step 6: Final answer
    x = 309,332.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.