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Finding the Fourth Proportional to 289,429.31, 399,461.87 and 168,642.17

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Solution

The fourth proportional to 289,429.31, 399,461.87 and 168,642.17 is: 232,755.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,429.31 : 399,461.87 = 168,642.17 : x
  2. Step 2: Convert to fraction form
    289,429.31/399,461.87 = 168,642.17/x
  3. Step 3: Cross multiply
    289,429.31x = 399,461.87 × 168,642.17
  4. Step 4: Simplify right side
    289,429.31x = 67,366,118,009.32
  5. Step 5: Solve for x
    x = 67,366,118,009.32/289,429.31
  6. Step 6: Final answer
    x = 232,755.00

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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.