Home / 384,504.60-530,631.45-221,160.81

Finding the Fourth Proportional to 384,504.60, 530,631.45 and 221,160.81

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Solution

The fourth proportional to 384,504.60, 530,631.45 and 221,160.81 is: 305,210.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,504.60 : 530,631.45 = 221,160.81 : x
  2. Step 2: Convert to fraction form
    384,504.60/530,631.45 = 221,160.81/x
  3. Step 3: Cross multiply
    384,504.60x = 530,631.45 × 221,160.81
  4. Step 4: Simplify right side
    384,504.60x = 117,354,881,293.47
  5. Step 5: Solve for x
    x = 117,354,881,293.47/384,504.60
  6. Step 6: Final answer
    x = 305,210.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.