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Finding the Fourth Proportional to 388,858.40, 536,624.48 and 210,010.40

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Solution

The fourth proportional to 388,858.40, 536,624.48 and 210,010.40 is: 289,814.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,858.40 : 536,624.48 = 210,010.40 : x
  2. Step 2: Convert to fraction form
    388,858.40/536,624.48 = 210,010.40/x
  3. Step 3: Cross multiply
    388,858.40x = 536,624.48 × 210,010.40
  4. Step 4: Simplify right side
    388,858.40x = 112,696,721,694.59
  5. Step 5: Solve for x
    x = 112,696,721,694.59/388,858.40
  6. Step 6: Final answer
    x = 289,814.29

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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.