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Finding the Fourth Proportional to 235,862.68, 355,369.45 and 213,402.15

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Solution

The fourth proportional to 235,862.68, 355,369.45 and 213,402.15 is: 321,528.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,862.68 : 355,369.45 = 213,402.15 : x
  2. Step 2: Convert to fraction form
    235,862.68/355,369.45 = 213,402.15/x
  3. Step 3: Cross multiply
    235,862.68x = 355,369.45 × 213,402.15
  4. Step 4: Simplify right side
    235,862.68x = 75,836,602,897.47
  5. Step 5: Solve for x
    x = 75,836,602,897.47/235,862.68
  6. Step 6: Final answer
    x = 321,528.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.