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Finding the Fourth Proportional to 288,000.61, 397,450.40 and 157,185.42

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Solution

The fourth proportional to 288,000.61, 397,450.40 and 157,185.42 is: 216,921.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,000.61 : 397,450.40 = 157,185.42 : x
  2. Step 2: Convert to fraction form
    288,000.61/397,450.40 = 157,185.42/x
  3. Step 3: Cross multiply
    288,000.61x = 397,450.40 × 157,185.42
  4. Step 4: Simplify right side
    288,000.61x = 62,473,408,053.17
  5. Step 5: Solve for x
    x = 62,473,408,053.17/288,000.61
  6. Step 6: Final answer
    x = 216,921.10

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1.5x scale

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.