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Finding the Fourth Proportional to 385,729.65, 578,686.86 and 160,965.05

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Solution

The fourth proportional to 385,729.65, 578,686.86 and 160,965.05 is: 241,486.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,729.65 : 578,686.86 = 160,965.05 : x
  2. Step 2: Convert to fraction form
    385,729.65/578,686.86 = 160,965.05/x
  3. Step 3: Cross multiply
    385,729.65x = 578,686.86 × 160,965.05
  4. Step 4: Simplify right side
    385,729.65x = 93,148,356,460.81
  5. Step 5: Solve for x
    x = 93,148,356,460.81/385,729.65
  6. Step 6: Final answer
    x = 241,486.12

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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.