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Finding the Fourth Proportional to 471,390.49, 650,509.59 and 256,534.21

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Solution

The fourth proportional to 471,390.49, 650,509.59 and 256,534.21 is: 354,012.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,390.49 : 650,509.59 = 256,534.21 : x
  2. Step 2: Convert to fraction form
    471,390.49/650,509.59 = 256,534.21/x
  3. Step 3: Cross multiply
    471,390.49x = 650,509.59 × 256,534.21
  4. Step 4: Simplify right side
    471,390.49x = 166,877,963,768.07
  5. Step 5: Solve for x
    x = 166,877,963,768.07/471,390.49
  6. Step 6: Final answer
    x = 354,012.16

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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.