Home / 205,045.40-307,539.30-64,818.20

Finding the Fourth Proportional to 205,045.40, 307,539.30 and 64,818.20

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Solution

The fourth proportional to 205,045.40, 307,539.30 and 64,818.20 is: 97,218.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,045.40 : 307,539.30 = 64,818.20 : x
  2. Step 2: Convert to fraction form
    205,045.40/307,539.30 = 64,818.20/x
  3. Step 3: Cross multiply
    205,045.40x = 307,539.30 × 64,818.20
  4. Step 4: Simplify right side
    205,045.40x = 19,934,143,855.26
  5. Step 5: Solve for x
    x = 19,934,143,855.26/205,045.40
  6. Step 6: Final answer
    x = 97,218.20

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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.