Home / 423,177.40-634,345.60-212,171.32

Finding the Fourth Proportional to 423,177.40, 634,345.60 and 212,171.32

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Solution

The fourth proportional to 423,177.40, 634,345.60 and 212,171.32 is: 318,046.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,177.40 : 634,345.60 = 212,171.32 : x
  2. Step 2: Convert to fraction form
    423,177.40/634,345.60 = 212,171.32/x
  3. Step 3: Cross multiply
    423,177.40x = 634,345.60 × 212,171.32
  4. Step 4: Simplify right side
    423,177.40x = 134,589,943,288.19
  5. Step 5: Solve for x
    x = 134,589,943,288.19/423,177.40
  6. Step 6: Final answer
    x = 318,046.15

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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.