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Finding the Fourth Proportional to 389,758.17, 538,237.71 and 368,530.53

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Solution

The fourth proportional to 389,758.17, 538,237.71 and 368,530.53 is: 508,923.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,758.17 : 538,237.71 = 368,530.53 : x
  2. Step 2: Convert to fraction form
    389,758.17/538,237.71 = 368,530.53/x
  3. Step 3: Cross multiply
    389,758.17x = 538,237.71 × 368,530.53
  4. Step 4: Simplify right side
    389,758.17x = 198,357,028,532.29
  5. Step 5: Solve for x
    x = 198,357,028,532.29/389,758.17
  6. Step 6: Final answer
    x = 508,923.34

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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.