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Finding the Fourth Proportional to 486,313.02, 728,970.66 and 186,712.92

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Solution

The fourth proportional to 486,313.02, 728,970.66 and 186,712.92 is: 279,877.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,313.02 : 728,970.66 = 186,712.92 : x
  2. Step 2: Convert to fraction form
    486,313.02/728,970.66 = 186,712.92/x
  3. Step 3: Cross multiply
    486,313.02x = 728,970.66 × 186,712.92
  4. Step 4: Simplify right side
    486,313.02x = 136,108,240,522.93
  5. Step 5: Solve for x
    x = 136,108,240,522.93/486,313.02
  6. Step 6: Final answer
    x = 279,877.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.