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Finding the Fourth Proportional to 553,700.80, 831,472.80 and 304,561.60

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Solution

The fourth proportional to 553,700.80, 831,472.80 and 304,561.60 is: 457,349.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,700.80 : 831,472.80 = 304,561.60 : x
  2. Step 2: Convert to fraction form
    553,700.80/831,472.80 = 304,561.60/x
  3. Step 3: Cross multiply
    553,700.80x = 831,472.80 × 304,561.60
  4. Step 4: Simplify right side
    553,700.80x = 253,234,686,324.48
  5. Step 5: Solve for x
    x = 253,234,686,324.48/553,700.80
  6. Step 6: Final answer
    x = 457,349.32

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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.