Home / 309,669.40-464,390.70-243,238.87

Finding the Fourth Proportional to 309,669.40, 464,390.70 and 243,238.87

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Solution

The fourth proportional to 309,669.40, 464,390.70 and 243,238.87 is: 364,769.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,669.40 : 464,390.70 = 243,238.87 : x
  2. Step 2: Convert to fraction form
    309,669.40/464,390.70 = 243,238.87/x
  3. Step 3: Cross multiply
    309,669.40x = 464,390.70 × 243,238.87
  4. Step 4: Simplify right side
    309,669.40x = 112,957,869,106.51
  5. Step 5: Solve for x
    x = 112,957,869,106.51/309,669.40
  6. Step 6: Final answer
    x = 364,769.23

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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.