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Finding the Fourth Proportional to 368,448.70, 508,422.90 and 207,300.18

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Solution

The fourth proportional to 368,448.70, 508,422.90 and 207,300.18 is: 286,053.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,448.70 : 508,422.90 = 207,300.18 : x
  2. Step 2: Convert to fraction form
    368,448.70/508,422.90 = 207,300.18/x
  3. Step 3: Cross multiply
    368,448.70x = 508,422.90 × 207,300.18
  4. Step 4: Simplify right side
    368,448.70x = 105,396,158,686.12
  5. Step 5: Solve for x
    x = 105,396,158,686.12/368,448.70
  6. Step 6: Final answer
    x = 286,053.82

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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.