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Finding the Fourth Proportional to 370,685.30, 556,051.50 and 130,769.51

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Solution

The fourth proportional to 370,685.30, 556,051.50 and 130,769.51 is: 196,162.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,685.30 : 556,051.50 = 130,769.51 : x
  2. Step 2: Convert to fraction form
    370,685.30/556,051.50 = 130,769.51/x
  3. Step 3: Cross multiply
    370,685.30x = 556,051.50 × 130,769.51
  4. Step 4: Simplify right side
    370,685.30x = 72,714,579,409.51
  5. Step 5: Solve for x
    x = 72,714,579,409.51/370,685.30
  6. Step 6: Final answer
    x = 196,162.57

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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.