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Finding the Fourth Proportional to 423,047.20, 634,801.20 and 173,754.40

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Solution

The fourth proportional to 423,047.20, 634,801.20 and 173,754.40 is: 260,726.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,047.20 : 634,801.20 = 173,754.40 : x
  2. Step 2: Convert to fraction form
    423,047.20/634,801.20 = 173,754.40/x
  3. Step 3: Cross multiply
    423,047.20x = 634,801.20 × 173,754.40
  4. Step 4: Simplify right side
    423,047.20x = 110,299,501,625.28
  5. Step 5: Solve for x
    x = 110,299,501,625.28/423,047.20
  6. Step 6: Final answer
    x = 260,726.23

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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.