Home / 261,120,927.65-360,335,519.12-143,638,808.72

Finding the Fourth Proportional to 261,120,927.65, 360,335,519.12 and 143,638,808.72

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Solution

The fourth proportional to 261,120,927.65, 360,335,519.12 and 143,638,808.72 is: 198,215,306.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,120,927.65 : 360,335,519.12 = 143,638,808.72 : x
  2. Step 2: Convert to fraction form
    261,120,927.65/360,335,519.12 = 143,638,808.72/x
  3. Step 3: Cross multiply
    261,120,927.65x = 360,335,519.12 × 143,638,808.72
  4. Step 4: Simplify right side
    261,120,927.65x = 51,758,164,703,379,712
  5. Step 5: Solve for x
    x = 51,758,164,703,379,712/261,120,927.65
  6. Step 6: Final answer
    x = 198,215,306.49

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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.