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Finding the Fourth Proportional to 553,736.31, 830,651.35 and 154,377.47

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Solution

The fourth proportional to 553,736.31, 830,651.35 and 154,377.47 is: 231,579.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,736.31 : 830,651.35 = 154,377.47 : x
  2. Step 2: Convert to fraction form
    553,736.31/830,651.35 = 154,377.47/x
  3. Step 3: Cross multiply
    553,736.31x = 830,651.35 × 154,377.47
  4. Step 4: Simplify right side
    553,736.31x = 128,233,849,904.80
  5. Step 5: Solve for x
    x = 128,233,849,904.80/553,736.31
  6. Step 6: Final answer
    x = 231,579.27

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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.