Home / 257,916.60-386,681.31-89,377.74

Finding the Fourth Proportional to 257,916.60, 386,681.31 and 89,377.74

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Solution

The fourth proportional to 257,916.60, 386,681.31 and 89,377.74 is: 133,999.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,916.60 : 386,681.31 = 89,377.74 : x
  2. Step 2: Convert to fraction form
    257,916.60/386,681.31 = 89,377.74/x
  3. Step 3: Cross multiply
    257,916.60x = 386,681.31 × 89,377.74
  4. Step 4: Simplify right side
    257,916.60x = 34,560,701,588.04
  5. Step 5: Solve for x
    x = 34,560,701,588.04/257,916.60
  6. Step 6: Final answer
    x = 133,999.52

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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.