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Finding the Fourth Proportional to 308,543.65, 425,784.59 and 174,407.65

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Solution

The fourth proportional to 308,543.65, 425,784.59 and 174,407.65 is: 240,679.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,543.65 : 425,784.59 = 174,407.65 : x
  2. Step 2: Convert to fraction form
    308,543.65/425,784.59 = 174,407.65/x
  3. Step 3: Cross multiply
    308,543.65x = 425,784.59 × 174,407.65
  4. Step 4: Simplify right side
    308,543.65x = 74,260,087,619.19
  5. Step 5: Solve for x
    x = 74,260,087,619.19/308,543.65
  6. Step 6: Final answer
    x = 240,679.36

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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.