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Finding the Fourth Proportional to 469,261.74, 647,411.49 and 308,204.10

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Solution

The fourth proportional to 469,261.74, 647,411.49 and 308,204.10 is: 425,210.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,261.74 : 647,411.49 = 308,204.10 : x
  2. Step 2: Convert to fraction form
    469,261.74/647,411.49 = 308,204.10/x
  3. Step 3: Cross multiply
    469,261.74x = 647,411.49 × 308,204.10
  4. Step 4: Simplify right side
    469,261.74x = 199,534,875,605.11
  5. Step 5: Solve for x
    x = 199,534,875,605.11/469,261.74
  6. Step 6: Final answer
    x = 425,210.19

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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.