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Finding the Fourth Proportional to 502,139.06, 693,052.48 and 298,303.22

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Solution

The fourth proportional to 502,139.06, 693,052.48 and 298,303.22 is: 411,718.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,139.06 : 693,052.48 = 298,303.22 : x
  2. Step 2: Convert to fraction form
    502,139.06/693,052.48 = 298,303.22/x
  3. Step 3: Cross multiply
    502,139.06x = 693,052.48 × 298,303.22
  4. Step 4: Simplify right side
    502,139.06x = 206,739,788,518.50
  5. Step 5: Solve for x
    x = 206,739,788,518.50/502,139.06
  6. Step 6: Final answer
    x = 411,718.19

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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.