Home / 257,862.05-386,705.47-89,343.04

Finding the Fourth Proportional to 257,862.05, 386,705.47 and 89,343.04

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Solution

The fourth proportional to 257,862.05, 386,705.47 and 89,343.04 is: 133,984.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,862.05 : 386,705.47 = 89,343.04 : x
  2. Step 2: Convert to fraction form
    257,862.05/386,705.47 = 89,343.04/x
  3. Step 3: Cross multiply
    257,862.05x = 386,705.47 × 89,343.04
  4. Step 4: Simplify right side
    257,862.05x = 34,549,440,916.79
  5. Step 5: Solve for x
    x = 34,549,440,916.79/257,862.05
  6. Step 6: Final answer
    x = 133,984.20

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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.