Home / 205,058.40-307,558.80-64,831.20

Finding the Fourth Proportional to 205,058.40, 307,558.80 and 64,831.20

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Solution

The fourth proportional to 205,058.40, 307,558.80 and 64,831.20 is: 97,237.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,058.40 : 307,558.80 = 64,831.20 : x
  2. Step 2: Convert to fraction form
    205,058.40/307,558.80 = 64,831.20/x
  3. Step 3: Cross multiply
    205,058.40x = 307,558.80 × 64,831.20
  4. Step 4: Simplify right side
    205,058.40x = 19,939,406,074.56
  5. Step 5: Solve for x
    x = 19,939,406,074.56/205,058.40
  6. Step 6: Final answer
    x = 97,237.69

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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.