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Finding the Fourth Proportional to 531,436.80, 796,881.60 and 157,411.20

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Solution

The fourth proportional to 531,436.80, 796,881.60 and 157,411.20 is: 236,035.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,436.80 : 796,881.60 = 157,411.20 : x
  2. Step 2: Convert to fraction form
    531,436.80/796,881.60 = 157,411.20/x
  3. Step 3: Cross multiply
    531,436.80x = 796,881.60 × 157,411.20
  4. Step 4: Simplify right side
    531,436.80x = 125,438,088,913.92
  5. Step 5: Solve for x
    x = 125,438,088,913.92/531,436.80
  6. Step 6: Final answer
    x = 236,035.76

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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.