Home / 423,022.32-634,515.12-142,538.40

Finding the Fourth Proportional to 423,022.32, 634,515.12 and 142,538.40

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Solution

The fourth proportional to 423,022.32, 634,515.12 and 142,538.40 is: 213,801.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,022.32 : 634,515.12 = 142,538.40 : x
  2. Step 2: Convert to fraction form
    423,022.32/634,515.12 = 142,538.40/x
  3. Step 3: Cross multiply
    423,022.32x = 634,515.12 × 142,538.40
  4. Step 4: Simplify right side
    423,022.32x = 90,442,769,980.61
  5. Step 5: Solve for x
    x = 90,442,769,980.61/423,022.32
  6. Step 6: Final answer
    x = 213,801.41

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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.