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Finding the Fourth Proportional to 612,083.70, 918,125.55 and 238,106.70

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Solution

The fourth proportional to 612,083.70, 918,125.55 and 238,106.70 is: 357,160.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,083.70 : 918,125.55 = 238,106.70 : x
  2. Step 2: Convert to fraction form
    612,083.70/918,125.55 = 238,106.70/x
  3. Step 3: Cross multiply
    612,083.70x = 918,125.55 × 238,106.70
  4. Step 4: Simplify right side
    612,083.70x = 218,611,844,896.19
  5. Step 5: Solve for x
    x = 218,611,844,896.19/612,083.70
  6. Step 6: Final answer
    x = 357,160.05

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Similar ratio
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1.5x scale

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.