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Finding the Fourth Proportional to 423,710.65, 635,567.00 and 103,863.95

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Solution

The fourth proportional to 423,710.65, 635,567.00 and 103,863.95 is: 155,796.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,710.65 : 635,567.00 = 103,863.95 : x
  2. Step 2: Convert to fraction form
    423,710.65/635,567.00 = 103,863.95/x
  3. Step 3: Cross multiply
    423,710.65x = 635,567.00 × 103,863.95
  4. Step 4: Simplify right side
    423,710.65x = 66,012,495,412.50
  5. Step 5: Solve for x
    x = 66,012,495,412.50/423,710.65
  6. Step 6: Final answer
    x = 155,796.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.