Home / 312,177.53-430,646.22-189,637.36

Finding the Fourth Proportional to 312,177.53, 430,646.22 and 189,637.36

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Solution

The fourth proportional to 312,177.53, 430,646.22 and 189,637.36 is: 261,603.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,177.53 : 430,646.22 = 189,637.36 : x
  2. Step 2: Convert to fraction form
    312,177.53/430,646.22 = 189,637.36/x
  3. Step 3: Cross multiply
    312,177.53x = 430,646.22 × 189,637.36
  4. Step 4: Simplify right side
    312,177.53x = 81,666,611,178.16
  5. Step 5: Solve for x
    x = 81,666,611,178.16/312,177.53
  6. Step 6: Final answer
    x = 261,603.10

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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.