Home / 486,980.15-672,019.70-272,121.98

Finding the Fourth Proportional to 486,980.15, 672,019.70 and 272,121.98

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Solution

The fourth proportional to 486,980.15, 672,019.70 and 272,121.98 is: 375,521.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,980.15 : 672,019.70 = 272,121.98 : x
  2. Step 2: Convert to fraction form
    486,980.15/672,019.70 = 272,121.98/x
  3. Step 3: Cross multiply
    486,980.15x = 672,019.70 × 272,121.98
  4. Step 4: Simplify right side
    486,980.15x = 182,871,328,683.21
  5. Step 5: Solve for x
    x = 182,871,328,683.21/486,980.15
  6. Step 6: Final answer
    x = 375,521.12

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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.