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Finding the Fourth Proportional to 553,866.04, 764,335.74 and 299,217.16

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Solution

The fourth proportional to 553,866.04, 764,335.74 and 299,217.16 is: 412,920.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,866.04 : 764,335.74 = 299,217.16 : x
  2. Step 2: Convert to fraction form
    553,866.04/764,335.74 = 299,217.16/x
  3. Step 3: Cross multiply
    553,866.04x = 764,335.74 × 299,217.16
  4. Step 4: Simplify right side
    553,866.04x = 228,702,369,409.30
  5. Step 5: Solve for x
    x = 228,702,369,409.30/553,866.04
  6. Step 6: Final answer
    x = 412,920.01

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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.