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Finding the Fourth Proportional to 208,041.68, 287,097.26 and 112,548.08

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Solution

The fourth proportional to 208,041.68, 287,097.26 and 112,548.08 is: 155,316.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,041.68 : 287,097.26 = 112,548.08 : x
  2. Step 2: Convert to fraction form
    208,041.68/287,097.26 = 112,548.08/x
  3. Step 3: Cross multiply
    208,041.68x = 287,097.26 × 112,548.08
  4. Step 4: Simplify right side
    208,041.68x = 32,312,245,386.26
  5. Step 5: Solve for x
    x = 32,312,245,386.26/208,041.68
  6. Step 6: Final answer
    x = 155,316.21

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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.