Home / 312,239.18-430,900.50-191,357.12

Finding the Fourth Proportional to 312,239.18, 430,900.50 and 191,357.12

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Solution

The fourth proportional to 312,239.18, 430,900.50 and 191,357.12 is: 264,079.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,239.18 : 430,900.50 = 191,357.12 : x
  2. Step 2: Convert to fraction form
    312,239.18/430,900.50 = 191,357.12/x
  3. Step 3: Cross multiply
    312,239.18x = 430,900.50 × 191,357.12
  4. Step 4: Simplify right side
    312,239.18x = 82,455,878,686.56
  5. Step 5: Solve for x
    x = 82,455,878,686.56/312,239.18
  6. Step 6: Final answer
    x = 264,079.22

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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.