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Finding the Fourth Proportional to 289,756.44, 399,769.38 and 168,870.06

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Solution

The fourth proportional to 289,756.44, 399,769.38 and 168,870.06 is: 232,985.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,756.44 : 399,769.38 = 168,870.06 : x
  2. Step 2: Convert to fraction form
    289,756.44/399,769.38 = 168,870.06/x
  3. Step 3: Cross multiply
    289,756.44x = 399,769.38 × 168,870.06
  4. Step 4: Simplify right side
    289,756.44x = 67,509,079,186.76
  5. Step 5: Solve for x
    x = 67,509,079,186.76/289,756.44
  6. Step 6: Final answer
    x = 232,985.60

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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.