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Finding the Fourth Proportional to 287,878.48, 397,066.60 and 249,569.53

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Solution

The fourth proportional to 287,878.48, 397,066.60 and 249,569.53 is: 344,227.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,878.48 : 397,066.60 = 249,569.53 : x
  2. Step 2: Convert to fraction form
    287,878.48/397,066.60 = 249,569.53/x
  3. Step 3: Cross multiply
    287,878.48x = 397,066.60 × 249,569.53
  4. Step 4: Simplify right side
    287,878.48x = 99,095,724,740.70
  5. Step 5: Solve for x
    x = 99,095,724,740.70/287,878.48
  6. Step 6: Final answer
    x = 344,227.62

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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.