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Finding the Fourth Proportional to 385,703.06, 578,706.88 and 119,484.34

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Solution

The fourth proportional to 385,703.06, 578,706.88 and 119,484.34 is: 179,273.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,703.06 : 578,706.88 = 119,484.34 : x
  2. Step 2: Convert to fraction form
    385,703.06/578,706.88 = 119,484.34/x
  3. Step 3: Cross multiply
    385,703.06x = 578,706.88 × 119,484.34
  4. Step 4: Simplify right side
    385,703.06x = 69,146,409,610.26
  5. Step 5: Solve for x
    x = 69,146,409,610.26/385,703.06
  6. Step 6: Final answer
    x = 179,273.69

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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.