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Finding the Fourth Proportional to 291,848.84, 402,751.40 and 157,712.84

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Solution

The fourth proportional to 291,848.84, 402,751.40 and 157,712.84 is: 217,643.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,848.84 : 402,751.40 = 157,712.84 : x
  2. Step 2: Convert to fraction form
    291,848.84/402,751.40 = 157,712.84/x
  3. Step 3: Cross multiply
    291,848.84x = 402,751.40 × 157,712.84
  4. Step 4: Simplify right side
    291,848.84x = 63,519,067,107.98
  5. Step 5: Solve for x
    x = 63,519,067,107.98/291,848.84
  6. Step 6: Final answer
    x = 217,643.72

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.