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Finding the Fourth Proportional to 287,881.48, 397,070.74 and 249,572.54

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Solution

The fourth proportional to 287,881.48, 397,070.74 and 249,572.54 is: 344,231.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,881.48 : 397,070.74 = 249,572.54 : x
  2. Step 2: Convert to fraction form
    287,881.48/397,070.74 = 249,572.54/x
  3. Step 3: Cross multiply
    287,881.48x = 397,070.74 × 249,572.54
  4. Step 4: Simplify right side
    287,881.48x = 99,097,953,141.48
  5. Step 5: Solve for x
    x = 99,097,953,141.48/287,881.48
  6. Step 6: Final answer
    x = 344,231.78

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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.