Home / 306,726.60-423,272.34-172,564.68

Finding the Fourth Proportional to 306,726.60, 423,272.34 and 172,564.68

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Solution

The fourth proportional to 306,726.60, 423,272.34 and 172,564.68 is: 238,133.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,726.60 : 423,272.34 = 172,564.68 : x
  2. Step 2: Convert to fraction form
    306,726.60/423,272.34 = 172,564.68/x
  3. Step 3: Cross multiply
    306,726.60x = 423,272.34 × 172,564.68
  4. Step 4: Simplify right side
    306,726.60x = 73,041,855,904.95
  5. Step 5: Solve for x
    x = 73,041,855,904.95/306,726.60
  6. Step 6: Final answer
    x = 238,133.43

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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.