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Finding the Fourth Proportional to 431,990.58, 648,275.13 and 179,271.30

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Solution

The fourth proportional to 431,990.58, 648,275.13 and 179,271.30 is: 269,026.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,990.58 : 648,275.13 = 179,271.30 : x
  2. Step 2: Convert to fraction form
    431,990.58/648,275.13 = 179,271.30/x
  3. Step 3: Cross multiply
    431,990.58x = 648,275.13 × 179,271.30
  4. Step 4: Simplify right side
    431,990.58x = 116,217,125,312.77
  5. Step 5: Solve for x
    x = 116,217,125,312.77/431,990.58
  6. Step 6: Final answer
    x = 269,026.99

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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.