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Finding the Fourth Proportional to 356,878.40, 534,799.20 and 304,001.60

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Solution

The fourth proportional to 356,878.40, 534,799.20 and 304,001.60 is: 455,560.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,878.40 : 534,799.20 = 304,001.60 : x
  2. Step 2: Convert to fraction form
    356,878.40/534,799.20 = 304,001.60/x
  3. Step 3: Cross multiply
    356,878.40x = 534,799.20 × 304,001.60
  4. Step 4: Simplify right side
    356,878.40x = 162,579,812,478.72
  5. Step 5: Solve for x
    x = 162,579,812,478.72/356,878.40
  6. Step 6: Final answer
    x = 455,560.81

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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.