Home / 386,495.40-579,743.10-106,012.20

Finding the Fourth Proportional to 386,495.40, 579,743.10 and 106,012.20

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Solution

The fourth proportional to 386,495.40, 579,743.10 and 106,012.20 is: 159,018.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,495.40 : 579,743.10 = 106,012.20 : x
  2. Step 2: Convert to fraction form
    386,495.40/579,743.10 = 106,012.20/x
  3. Step 3: Cross multiply
    386,495.40x = 579,743.10 × 106,012.20
  4. Step 4: Simplify right side
    386,495.40x = 61,459,841,465.82
  5. Step 5: Solve for x
    x = 61,459,841,465.82/386,495.40
  6. Step 6: Final answer
    x = 159,018.30

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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.