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Finding the Fourth Proportional to 388,963.24, 536,869.14 and 253,335.16

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Solution

The fourth proportional to 388,963.24, 536,869.14 and 253,335.16 is: 349,667.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,963.24 : 536,869.14 = 253,335.16 : x
  2. Step 2: Convert to fraction form
    388,963.24/536,869.14 = 253,335.16/x
  3. Step 3: Cross multiply
    388,963.24x = 536,869.14 × 253,335.16
  4. Step 4: Simplify right side
    388,963.24x = 136,007,829,480.96
  5. Step 5: Solve for x
    x = 136,007,829,480.96/388,963.24
  6. Step 6: Final answer
    x = 349,667.57

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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.