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Finding the Fourth Proportional to 388,162.49, 535,110.75 and 301,970.07

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Solution

The fourth proportional to 388,162.49, 535,110.75 and 301,970.07 is: 416,288.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,162.49 : 535,110.75 = 301,970.07 : x
  2. Step 2: Convert to fraction form
    388,162.49/535,110.75 = 301,970.07/x
  3. Step 3: Cross multiply
    388,162.49x = 535,110.75 × 301,970.07
  4. Step 4: Simplify right side
    388,162.49x = 161,587,430,635.25
  5. Step 5: Solve for x
    x = 161,587,430,635.25/388,162.49
  6. Step 6: Final answer
    x = 416,288.12

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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.