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Finding the Fourth Proportional to 380,798.47, 525,558 and 219,622.24

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Solution

The fourth proportional to 380,798.47, 525,558 and 219,622.24 is: 303,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,798.47 : 525,558 = 219,622.24 : x
  2. Step 2: Convert to fraction form
    380,798.47/525,558 = 219,622.24/x
  3. Step 3: Cross multiply
    380,798.47x = 525,558 × 219,622.24
  4. Step 4: Simplify right side
    380,798.47x = 115,424,225,209.92
  5. Step 5: Solve for x
    x = 115,424,225,209.92/380,798.47
  6. Step 6: Final answer
    x = 303,111.05

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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.