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Finding the Fourth Proportional to 388,474.42, 536,056.06 and 286,554.94

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Solution

The fourth proportional to 388,474.42, 536,056.06 and 286,554.94 is: 395,417.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,474.42 : 536,056.06 = 286,554.94 : x
  2. Step 2: Convert to fraction form
    388,474.42/536,056.06 = 286,554.94/x
  3. Step 3: Cross multiply
    388,474.42x = 536,056.06 × 286,554.94
  4. Step 4: Simplify right side
    388,474.42x = 153,609,512,109.94
  5. Step 5: Solve for x
    x = 153,609,512,109.94/388,474.42
  6. Step 6: Final answer
    x = 395,417.32

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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.