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Finding the Fourth Proportional to 449,950.36, 620,969.90 and 256,417.26

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Solution

The fourth proportional to 449,950.36, 620,969.90 and 256,417.26 is: 353,877.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,950.36 : 620,969.90 = 256,417.26 : x
  2. Step 2: Convert to fraction form
    449,950.36/620,969.90 = 256,417.26/x
  3. Step 3: Cross multiply
    449,950.36x = 620,969.90 × 256,417.26
  4. Step 4: Simplify right side
    449,950.36x = 159,227,400,300.47
  5. Step 5: Solve for x
    x = 159,227,400,300.47/449,950.36
  6. Step 6: Final answer
    x = 353,877.70

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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.