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Finding the Fourth Proportional to 401,172.64, 553,622.58 and 219,880.66

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Solution

The fourth proportional to 401,172.64, 553,622.58 and 219,880.66 is: 303,437.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,172.64 : 553,622.58 = 219,880.66 : x
  2. Step 2: Convert to fraction form
    401,172.64/553,622.58 = 219,880.66/x
  3. Step 3: Cross multiply
    401,172.64x = 553,622.58 × 219,880.66
  4. Step 4: Simplify right side
    401,172.64x = 121,730,898,281.30
  5. Step 5: Solve for x
    x = 121,730,898,281.30/401,172.64
  6. Step 6: Final answer
    x = 303,437.69

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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.