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Finding the Fourth Proportional to 388,504.71, 536,153.04 and 216,422.47

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Solution

The fourth proportional to 388,504.71, 536,153.04 and 216,422.47 is: 298,672.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,504.71 : 536,153.04 = 216,422.47 : x
  2. Step 2: Convert to fraction form
    388,504.71/536,153.04 = 216,422.47/x
  3. Step 3: Cross multiply
    388,504.71x = 536,153.04 × 216,422.47
  4. Step 4: Simplify right side
    388,504.71x = 116,035,565,285.51
  5. Step 5: Solve for x
    x = 116,035,565,285.51/388,504.71
  6. Step 6: Final answer
    x = 298,672.22

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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.