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Finding the Fourth Proportional to 468,355.02, 646,345.58 and 287,031.92

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Solution

The fourth proportional to 468,355.02, 646,345.58 and 287,031.92 is: 396,113.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,355.02 : 646,345.58 = 287,031.92 : x
  2. Step 2: Convert to fraction form
    468,355.02/646,345.58 = 287,031.92/x
  3. Step 3: Cross multiply
    468,355.02x = 646,345.58 × 287,031.92
  4. Step 4: Simplify right side
    468,355.02x = 185,521,812,991.62
  5. Step 5: Solve for x
    x = 185,521,812,991.62/468,355.02
  6. Step 6: Final answer
    x = 396,113.64

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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.