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Finding the Fourth Proportional to 502,139.48, 693,053.06 and 298,303.63

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Solution

The fourth proportional to 502,139.48, 693,053.06 and 298,303.63 is: 411,718.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,139.48 : 693,053.06 = 298,303.63 : x
  2. Step 2: Convert to fraction form
    502,139.48/693,053.06 = 298,303.63/x
  3. Step 3: Cross multiply
    502,139.48x = 693,053.06 × 298,303.63
  4. Step 4: Simplify right side
    502,139.48x = 206,740,243,580.61
  5. Step 5: Solve for x
    x = 206,740,243,580.61/502,139.48
  6. Step 6: Final answer
    x = 411,718.76

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1.5x scale

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.