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Finding the Fourth Proportional to 388,702.97, 536,386.47 and 214,265.51

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Solution

The fourth proportional to 388,702.97, 536,386.47 and 214,265.51 is: 295,673.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,702.97 : 536,386.47 = 214,265.51 : x
  2. Step 2: Convert to fraction form
    388,702.97/536,386.47 = 214,265.51/x
  3. Step 3: Cross multiply
    388,702.97x = 536,386.47 × 214,265.51
  4. Step 4: Simplify right side
    388,702.97x = 114,929,117,869.72
  5. Step 5: Solve for x
    x = 114,929,117,869.72/388,702.97
  6. Step 6: Final answer
    x = 295,673.38

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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.